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Home , Human skeleton, Muscular system, Organ (biology), Organ system

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Our new reading program, Pearson ReadyGen, includes assignments which require students to read, research and synthesize information in a variety of ways. Students in Mrs. Kotwas’s 4th grade class wrote expository essays as part of their reading and writing curriculum. They had to choose three systems of the body, research using specified sources, then write an essay. They followed up these essays with an infographic of one of the body systems they studied.

George

The System By:Nelly & Nathan

The human body is amazing! The human body has many systems. All of them work together so the human body can . The human body is similar to a computer because they both have connecting parts that allow them to complete their tasks. Three of these systems are skeletal system, and . Muscular System The muscular system is a very common system.Your cells can carry to and from your . Muscular cells make parts of your body move. The muscular system is made for your body to move.The three muscles are is the s keletal muscles , smooth muscles , and the muscles . These three parts help the muscular system do is they help the body attached to the . The skeletal m uscle h as about 700 named m uscles that come together to make half of a person's body weight.The muscular system is also known for helping the person breath, cough,and sneeze.Your muscular system is made for your body to function correctly.The muscles make your heart beat.They even make the pupils of your become larger or smaller. may be found in most of your organs.The Heart musicals make your heart beat and pump throughout your body and you can not controll your heart muscles.Last of all is the muscles for example you kick a ball then you pull all the bones to the lower leg. Respiratory System Meanwhile the respiratory system is a very important system t akes in oxygen from the air you breath and gets rid of the waste gases you breathe out.When that air that you breathe goes into your . For you to be able to breathe you need oxygen in the lugs. When you breathe your breath pass into your little blood vessels.Also the carbon dioxide and water goes to your lungs.The three important things that help the respiratory system are lungs,bronchi,and last of all .Now what is important about the bronchi the trachea breaks into cubes called bronchi each tube leads to each .All the air travels through the trachea and towards your lungs all the waste gases also travel through the tube.Also the oxygen you breathe and gets rid of the carbon dioxide and water vapor in your lungs.The windpipe is also a tube that travels air between the lungs and upper respiratory passages. From the world book it told me that the human trachea is 5 inches long and 13 centimeters long and less than one inch. Over all the respiratory system works very good because of the lungs,bronchi,and last of all trachea help the respiratory system be strong and safe. Skeletal System The skeletal system is the most protected system .The Skeletal system supports your body and gives you shape.It protects your internal organs for example your protects your brain.It makes red blood cells that carry oxygen and white blood cells that fight germs.All these help the skeleton protect the human body organs. There are four joints pivot ,gliding joint ,hinge joint and ball and socket joints.The pivot joint is found in the neck the gliding joint is found in the wrist and ankle the hinge joint is found in the and elbow last of all the ball and socket joint is found in the shoulder and .How these bones move are the pivot joints bones circle around each other the gliding joint slide over each other the hinge joint move back and forth the ball and socket joints move in circles.The three parts that help protect the organs are bones, joints, .In the cartilage is a rubbery it is called gristle the tissue is found in the backbone it is found between the vertebrae of the

spin. The cartilage is a firm framework the gradually replaces the cartilage as the skeleton grown for and . All these systems help the body function correctly. You need all your body parts for you to be safe and healthy.Like when your blood stops working you can have a problem.The blood goes all over your body so you can have your heart beat and so if your blood stops working then your muscles get slower and weaker. All your body parts need to be strong and safe so your body parts have to work together and if some of the body parts gets sick your whole body won't function the same way if it is strong and healthy. Bibliography Resources: 1.ScienceSaurus A Student Handbook 2.WorldBook Online h ttps://www.worldbookonline.com/student/home

Kamil

3 Systems of the Human Body By:Rose and Maximilian

One of the most spectacular things of our body is that it has many systems that work together. Without these systems our body would not able to do anything. These systems actually help us move, push, pull, run, and many other activities.There are many systems that help us do everything. Some of these systems are: muscular system, skeletal system, and digestive system.

Digestive system Take digestive system an example the digestive system is a part in our body. according to easy science for kids “The digestive system allow the body to break down into vitamins, protein, ,minerals ,and then absorbs it. This system is important because if we didn't have a digestive system our body would be fat and even our would hurt everyday . Muscular system Another system is the muscular system. According to easy science for kids “ The muscular system is made of tissues that work with skeletal system to control the human body.There are three types of muscles tissues in your body, they are: Skeletal, smooth and cardiac. The reason we have the muscular system is because it help us do everything like type, talk, run, move and everything else. Without the muscular system we wouldn’t be able to move in any way. Skeletal system There is also the skeletal system. The skeletal system consist of bones, , cartilage and . It helps us to move, gives shape to the body and protects our organs. Without this system we would flab down to the ground. This system is basically our bones/skeleton. You wouldn’t be able to move without this system because this system supports your body so you don’t just fall down like a blob! According to sciencesaurus “Your body has two system that work together to help your body move. In conclusion, these systems are very important.These systems help us move and function properly.They give our and size. To Function properly and move you need human system. No body would work without the systems of trh body. To conclude you need all the systems o f the body to move and function properly. Bibliography Ressources: 1. scienceSaurus: a student handbook 2. Worldbook online-http://www .worldbookonline.com/student/hom 3. Easyscienceforkids-http://easyscienceforkids.com/human-body-systems-fo r-kids-video/

Kuba

The Human Body By: Emily and Josh The human body has multiple systems so it can work properly. If one system is broken, the human body has a huge problem. The systems have to work together. Each system has several parts. Every system has a special part to play in the human body. Three systems of the human body are the , Reproductive, and the Digestive system. The Nervous system is made up of billions of special cells so it can work. These cells are called neurons. The book T he Nervous System s tates that the brain controls all parts of the nervous system. The Nervous System also explained that the nervous system is all over the body which is called peripheral nervous system. What it does is, it carries to the muscles through the body to help the body move. The brain is the biggest part of the human body so it is a big help to the nervous system. The female and the male have different Reproductive systems. This is located in the hip area. There are 10 organs in the female reproductive system.The reproductive system makes the baby. One of them are the . The Vagina is located behind the bladder and the . World Book claims that it is the way out for baby. There are 15 organs in the male’s reproductive system. One of them is the . Testicle is behind a stack of . It helps the man go there puberty. What it does to the man is the it grows the beard, it gives the man muscle mass and it gives the man a deeper voice.

The digestive system helps you digest your food. It is found in the stomach area. The book T he Human body said that before the food can get to the stomach it goes through the . How the digestive system helps is that it breaks it into smaller parts before it reaches the stomach. S ciencesaurus said that when it gets to the stomach it digest in 2 ways. First, it breaks it down into smaller particles. Then after it digests the food, it mixes the food with digestive juices. The human body has several organs to help us move and play. Three organs of the human body are the nervous system, the reproductive system, and the digestive system. If we did not have these organs our body will not work. All the parts of the human body have a special part to play. The reproductive system, the nervous system, and the digestive system are only three of the organs of the human body. The human body has 12 organs. In summary if we did not have the reproductive system, the nervous system, and the digestive system and all other systems our body would not work and we will not be able to move. Bibliography Resources: 1. ScienceSaurus: A Student Handbook 2. The Human Body 3. World books online The Nervous System :h ttps://worldbook.kitaboo.com/reader/worldbook/cloud-reader/kitaboo-reflowable.html#/ main/https;%7C%7Cworldbook.kitaboo.com%7CContentServer%7Cmvc%7Cs3view%7 C41681%7Chtml5%7C41681?readerType=new&pageMode=double&page=1

Alyssa

The Three Systems By: Maksymilian and Warren There are many systems in the human body. All the systems need to work together for the human body to function properly. If one of them is removed the human body won’t work like it should. Some of the human body systems are the Skeletal system, Nervous system, and Digestive system. Digestive System The digestive system works when you eat something like a grape or some other type of food. When you swallow the grape the digestive system comes in and breaks down the food into smaller particles or smaller pieces. The smaller pieces make the food easier to pass through the intestinal wall. The digestive system is pretty much a tube that extends from the mouth to the stomach. The digestive system includes the, Digestive ,

Gastrointestinal Tract, Alimentary Canal, Esophagus, , Intestine, , Pepsin, Gastric juice, and the amylase. All of these need to be included for the food to pass from the mouth to the stomach. As you can see, the Digestive System is a very important system that keeps you alive. It keeps you alive for many, many reasons. One of them is breaking down food for you to have energy. The Digestive System helps you survive and live. Nervous System

The Nervous System is a very interesting system. The Nervous System mainly includes the brain, the , and the three main parts of the Nervous System: the central nervous system, the peripheral nervous system, and the . The Central nervous system functions as the main switchboard. The Nervous System is a very important system to the human body.

Skeletal System

The skeletal system is a system that includes bones, joints, ligaments, and cartilage that provides a framework for the body. The skeletal system also has many tissues that make up parts of the skeletal system. They also include bones like vertebrae and joints. The skeletal system includes the .

The ribs include the Backbone, Floating ribs and the Cartridge. There is also the Skull. The skull includes the , the Cranial bones, and Occipital. As you can see on the

picture, the ribs protect all the guts and the other important parts of the human body.

The Skeletal system is a very unique system that holds up your whole body. If you didn’t have the Skeletal System, your body would be one big blob of jelly. The Skeletal System is a very special system. The skeleton is divided into the axial system and the . These three systems are very important to the human body. If you didn’t have the including systems you would be unable to eat, you would be a blob of jelly and you would never be nervous. Everyone is probably grateful that they have those 3 systems.

Bibliography `1. World Book online h ttp://www.worldbookonline.com/student/home 2. Easy Science for Kids http://easyscienceforkids.com/human-body-systems-for-kids-video/

Maximilian

Human body By:Sonya and Dominic The human body has lots of different systems. Each system helps us do everyday things! They help us with eating food, running, or even playing! All of the systems have many parts in them, and all the parts have to work together. Three systems of the body are the muscular system, the digestive system, and the nervous system.

Muscular System The muscular system is one of many systems in our body. It is important because it makes us move our bones! According to a book on , T he World Book Online there are over 600 muscles in the human body. The three types of muscles in the muscular system are skeletal, smooth, and cardiac. They even help you stay alive by making your heartbeat and make you breathe. The muscular system makes your pupils get bigger and smaller. Overall the muscular system is important! Digestive System The digestive system is one other system in the human body. It helps you eat food, and it helps drink drinks! The digestive system is a group of organs that break down food into smaller particles, so they can get through a “wall” in your body to get to your bloodstream ! Also this system uses the particles to nurture the whole body. begins in the mouth. Chewing is important so digestion is good for two reasons. When chewed food is ground into fine particles, the digestive juices can react more easily. Once the food is swallowed it passes through the esophagus(e ·soph·a·gus) into the stomach! The digestive system is important because The digestive system is important because it helps you eat and drink which helps you stay alive. Nervous System The nervous system is another system that helps you everyday. It helps you walk, this is because of this system includes spinal cords. According to T he Nervous System the spinal cord is a thick white tube of nerves, it connects to the brain! It also helps you think. It helps you think because the system includes the brain. The last part of the system is the nerves they help you feel things like a pinch or a simple kick, the nerves help you feel. There is a mass of nerves in your brain so it helps you react to something! There are nevers in your nose that help you smell There are many nerves in your body. All of a person's movements are because of the nervous system! Overall There are a lot of different systems in the human body! Also you need all of the systems to do all the thing you do like breathe and make your heartbeat! Bibliography Resources: 1. World book online a. http://www.worldbookonline.com/student/home 2. The Nervous System 3. ScienceSaurus a student handbook 4. EASY SCIENCE FOR KIDS a. http://easyscienceforkids.com/human-body-systems-for-kids-video/ 5. Fact cite a. http://www.factcite.com/index.html

Josh The Human Body Systems Aleksander and Kamil

The human body is made from many different systems. All the systems are important to the human body. Different systems do different things and helps humans do many things like breathe, walk, run, and . All the systems work together so humans can do many things. Three of the human body systems are the: muscular system, nervous system, and the skeletal system.

The Nervous System The nervous system is one of the important systems in your body. It connects the brain to all the nerves in the human body. The nervous system is an communication network that lets animals adjust and change in their environment. The nervous system also it consists the spinal cord and contains some nerves too. The nervous system is made up from tiny cells called neurons. Special neurons called receptors are in your , ’s, and other sensory organs.T he receptors translate events in a person's surroundings such as the sight of a tiger into nerve messages, which are known as impulses.

Skeletal System The has about 206 separate bones. If you look at your and you will not see the bones because of your . You may think that in your arms and hands there are not so many bones, but you are wrong. There are at least 60 bones in each . The human skeleton is a collection of bones, joints, ligaments, and cartilage. If you do not know what cartilage is then it is the source that is in your ear. It is a is a bone that is flexible but it is not a bone. Bones in the human body are for keeping all your guts, lungs, brain and heart intact. If you did not have any bones then you will be like a blob of jelly and you would not be functional or you would not be able to move. Also, the skeletal system keeps us balanced and prevents us from collapsing.

Muscular System The muscular system is one of the major organ systems in the human body. Muscles help us move and they cover most of our bones and then there is a layer of skin. Most muscles in your tounge help you speak. There is a collection of at least 600 skeletal muscles that let the human body move. The muscular system is one of the major . Skeletal muscles are attached to bones from the skeletal system. Muscles are named for their location and function.The muscles of the muscular system are all voluntary muscles. Voluntary muscles are muscles that operate under control. The human body has many systems which include: the nervous system, The skeletal system, and the muscular system. Without these systems the human body would not function properly. Every day the human body uses all

these systems to do many things. Every systems is important to a human and body.

Bibliography Resources: WorldBook Online h ttps://www.worldbookonline.com/student/home FactCite h ttp://www.factcite.com/ Easy Science for Kids http://easyscienceforkids.com/human-body-systems-for-kids-video/

Nelly

The Human Body By: Nicholas and Rameen There are many systems in the human body. Everybody in the whole wide world has the same systems in his or her body too. All systems work together to keep the human body moving. Some of the systems in the human body are the , the Digestive System, and the Skeletal system. Every system is important. If one system is not working that will cause problems for the other systems in the human body. Immune System According to world book Substances that trigger an Immune response are called antigens. According to world book In many cases, white blood cells simply kill the pathogen by surrounding it and breaking it down. According to world book The innate immune system responds rapidly to . According to world book Acquired immunity develops in response to pathogens. According to World book T he immune system must recognize and destroy foreign invaders but spare the body’s own healthy tissues. According to World Book Sometimes, however, the immune system wrongly identifies and attacks healthy tissues. According to World Book This reaction is called an a utoimmune response or a utoimmunity.According to World Book T he immune system cannot protect the body from all by itself. Digestive System World book said,’’ The D igestive System is the group of organs that break down food into smaller particles, or molecules, for use in the human body’’. World book said,’’ This breakdown makes it possible for the smaller digested particles to pass through the intestinal wall into the bloodstream’’. According to world book,’’ The particles are then distributed to nourish all parts of the body’’. World book said,’’ The digestive system consists primarily of a tube that extends from the mouth, through the stomach and intestines, and into the and ’’.World Book said,’’ The , proteins, and c arbohydrates (starches and sugars) in are made up of very complex molecules and must be d igested (broken down)’’. World book said,’’ When digestion is completed, starches and complex sugars are broken down into simple sugars, fats are digested to fatty acids and glycerol, and proteins are digested to amino acids and ’’. Skeletal System World Book said,’’ The skeletal system is the collection of bones, joints, ligaments, and cartilage that provides a framework for the body’’. All vertebrates including humans have a skeletal system. According to world book,’’ The skeletal system is one of the body’s major organ systems’’. It gives the body's shape, protects vital organs, and provides a system of levers operated by muscles that enable the body to move. I think the human body is very interesting because there are a lot of systems. I think the systems are interesting because they each have jobs, and some of the jobs are weird.

Bibliography Resources: 1. World Book Online https://www.worldbookonline.com/student/home 2. Easy Science for Kids http://easyscienceforkids.com/human-body-systems-for-kids-video/

Dominic

The Human Body

By: Alyssa & Izzy Your body parts are important because without them what what would you be able to do. All of the body systems are important- they help you play and they help you move around to do things. Your systems keep you healthy and strong. Three systems of the body are the Digestive System, Nervous System, and the Respiratory System.

Digestive System The Digestive System is one of the many Systems in the human body. The Digestive System helps you Digest your food without getting sick or choking.Before Your Body can use the food you eat,the food has to be broken down into Nutrients. ( A Nutrient is a substance that an needs in order to stay alive and grow)Breaking food down into nutrients is the way you Digestive System is to Function.

The Digestive System breaks down food in two different ways. First the Digestive System grinds the food and it mashes the food into tiny pieces. The it mixes the food with Digestive Juices. The Digestive juices break down into nutrients. Your Digestive system is important because without it you would not be able to eat because all that would happen was you would get sick and throw it up. You need the digestive system to mash up all the food in your body, and make the food digest into your body.

Nervous System The Nervous system is very important to the human body. The nervous system is important to the human body because it gives your body warnings like if you were in the forest and you felt something touching you, like a person's or something then your nervous system will be alerted. Your nervous system controls all of your body’s activities. None of your other systems would function without your nervous system. The organs in your nervous system are your brain, spinal, cord, , organs, and nerves. Nerves from your sense organs carry information to your brain and spinal cord. Your brain and spinal cord control how you respond to the information. Your nervous system helps because it helps you sense danger. You need your nervous system because if you were in danger and you did not have the nervous system you would not know if something would jump out of the bushes and get you. But if you had the nervous system you could sense almost everything and get help or run from it.

Respiratory System Your respiratory system takes in oxygen and gets rid of wasted gases. When you inhale, you take air into your lungs. The air contains oxygen. Your body cells need oxygen to release energy from the nutrients in food. In your lungs, the oxygen passes into tiny blood vessels. Red blood cells pick up the oxygen and carries it to cells throughout the human body.

Your respiratory system is important because it carries the oxygen that you breath in and let’s out the bad oxygen that is why it is important. The respiratory system is also important because if it did not take the bad air out of you then you would die or choke or something or something bad would happen like your lungs would break down because the respiratory system is part of your lungs. The respiratory system helps you get healthy like if you need new air it helps with taking in the new air and taking out the good air so it keeps you from dieing.

Bibliography Resources ● Sciencesaurus: Student handbook ● Book: The nervous system ● Easy science for kids http://easyscienceforkids.com/human-body-systems-for-kids-video /

Sonya

Three Systems of The Human Body By: Hadi and Kuba

There are many systems in a human’s body. All of them are important. They all work together to help operate a human’s body. If a system did not work, a human would have a lot of trouble living his/her own . Three systems of the human body are: the Skeletal System, the Digestive System, and the Nervous System.

The Skeletal System is one of the human body’s most important system. It’s purpose is to protect many soft organs inside the human body. According to World Book Online, the skeletal system consists of bones, joints, ligaments and cartilage. Tissues make up parts of the Skeletal System. They include bones, cartilage, and ligaments. Tissues don’t consist of joints. The skeleton is a major part of the Skeletal System. The skeleton consists of 206 bones. 22 of those bones are located in the skull. According to World Book, tissues are made up of bones, cartilage, ligaments, and joints, like the Skeletal System. A skeleton’s main part is bones. Cartilage is located in our and nose. It is a tough and flexible type of material, but it can be damaged easily. Ligaments are a tiny type of band that connects bones and cartilage. Joints are a type of material that bones go into so that they can be connected. The Skeletal System is what protects the human body. It consists of many important parts, too.

The Digestive System is the system in the human body that enables us to eat food and drink liquids. According to World Book Online, the Digestive System has a tube that allows us to eat and drink. The tube starts at the mouth and goes down through the stomach and intestines. The

Digestive System consists of the liver, , mouth, esophagus, stomach, and the small and large intestines. The liver is a very complex organ. It is a red and brown mass that helps the body digest food. The pancreas is a body organ that produces digestive juices that break down food. The mouth is the part of our bodies that chews up food and drinks liquids. The esophagus is the tube that carries food from our mouth into our stomach. The stomach is an organ that digests and keeps/stores food. The intestines are also the tube in the body that food and liquids pass through. The Digestive System is a system that lets us store, keep, eat, and drink foods and liquids.

The Nervous System is an internal communications network. It includes the brain, spinal cord, sense organs, and nerves. The brain is what controls our body, thoughts, and what we do. The spinal cord is a wire of neurons (nerve cells) that goes from the neck to about two-thirds down the backbone. According to a book called Sciencesaurus, sense organs are our eyes, ears, nose, , and skin. These organs enable us to use our , our senses of vision, , , smell, and our sense of touch/feel. Nerves are types of cells that are called neurons. Neurons make up the nervous system. The Nervous System is an important communications network that is located inside the human body.

There are twelve systems in the human body. All of them are important because they work together to operate a human’s body. One system of the the human body is the Skeletal System, which protects the important parts inside of a human’s body. Another system is the Digestive System, that digests food and liquids. One more system is the Nervous

System, which is a type of communications network. In summary, these three important systems are only three out of twelve major systems that help the human body function properly.

Bibliography Resources: ● ScienceSaurus: A Student Handbook ● World Book Online h ttp://www.worldbookonline.com/student/home ● Easy Science for Kids http://easyscienceforkids.com/human-body-systems-for-kids-video/ ●

Alex

Three Human Body Systems By: Afroz and George The human body has a variety of systems. The systems either help you fight o germs, or help your body function. When one system shuts down then another one doesn’t function right. Three systems of the human body are the Digestive System, Immune System, and Nervous System.

The Digestive System breaks down your food in two ways. First, you grind the food in your mouth. While the food is grinding, it mixes with digestive juices in your saliva. Once your food is swallowed it mixes with digestive juices in your stomach. Before your body can use the food you eat, the food needs to break down into nutrients. A nutrient is a substance that a living thing needs to grow and survive. Y our digestive system functions to break your food down into nutrients.

The Immune system fights o germs. Your body has many cells. There are brain cells, bone cells, and blood cells that fight o germs. Fighter cells get busy when you are sick. Fighter cells also fight and kill germs. Blood has red and white cells. A ll living things with vertebrates and backbones, including humans, and animals have these cells in their bodies. White blood cells are one of three types of cells found in blood. The other types are red blood cells and platelets.

The Nervous system controls all the activities you might do. None of your other systems would function correctly without your Nervous System. There are organs in the you nervous system called sense organs, nerves, spinal cords, and your brain. Your sense organs carry information to the brain and spinal cord. The spinal cord and brain control your responses to information brought to them. The brain's (ser uh BEL um) coordinates the movements that your muscles make.

In conclusion, the human body has many systems. If your body didn't have systems then you wouldn't be able to do the activities that you do. The human body's systems are very important for a human to live a good and healthy life!

Bibliography Resources: ● Achoo! : The Most Interesting Book You’ll Ever Read About Germs ● Achoo! : All About Colds ● ScienceSaurus: A Student Handbook ● 100 Things You Should Know About The Human Body ● World Book Online h ttp://www.worldbookonline.com/student/home ● Fact Site http://www.factcite.com/ ● I Know How We Fight Germs

Hadi

ree Systems of the Human Body By Nicole & Madison

e Human Body has twelve systems. ey help us do daily activities like eat, drink, sleep, breathe, and many other activities. In order to make the body function, it needs all twelve of the systems. ey work together as a team to move the body. All twelve body systems are very important. ree systems of the human body are Digestive, Nervous, and the Muscular system.

Digestive System e Digestive System is one out of the many systems in the human body. In order for the digestive system to work, it has the food go through ten stages: the mouth, esophagus, stomach, liver, gallbladder, pancreas, , , rectum, and the anus. If one of the stages are down, the digestive system will not work properly.Digestion turns food into energy which helps you run, walk, jump, and play. ey all work together to make the system. e reason why we have this system in our body is because if we didn’t have this system, we wouldn't be able to swallow or digest food. e Human Body s tates that the digestive system is made up of connected tubes that lets the food low through it. e Digestive System is one of the most helpful systems.

Nervous System e nervous system is one of the most helpful systems in the human body. e nervous system lets you know if something or someone is touching the human body. e nervous system includes the brain, the spinal cord, and the nerves. e Nervous System tells us when we have to move. Every move you make goes to the neurons. e neurons is really tiny cells in your body. e cells help you with hearing, vision, smell, and taste. Messages enter a neuron through the dendrites. e messages go to the end of the nerve. To reach the next neuron these messages across a . Chemicals help c arry messages over these gap. Nervous passes massages until they have reached the spinal cord. is long rope of the nervous runs up your back. e spinal cord carries messages to the brain and out of the brain. e brain is one of the most important parts in your body. It helps you learn, keep memories, and make decisions. e brain has over 100,000,000,000 neurons. is helps the brain remember thoughts. e Nervous system is a very helpful system in the human body. If we didn’t have the nervous system, we couldn’t feel anything.

Muscular System e muscular system helps you in almost anything. Without muscles we couldn’t eat, walk, talk, or even breathe. In our bodies, we have more than 630 muscles. ey help us lit, move, and push stuf. Muscles come in four diferent kinds of shapes. ey are spindle, lat, triangular, and circular. ree types of are cardiac, smooth, and skeletal. Cardiac and the smooth muscles are involuntary muscles. For example, an involuntary muscle is your heart. It helps keep you alive. According to e Muscular System, i t states that your Body muscles take up half of your body weight. at's why everybody at certain ages weighs diferent. So the muscular system is a very useful system in the human body. We have a human body because these three systems in the human body. In conclusion, e digestive, nervous, and the muscular systems are three systems of the human body at help us a lot.

Bibliography Resources: 1. ScienceSaurus: A Student Handbook 2. WorldBook Online h ttps://www.worldbookonline.com/wb/products? 3. Easy Science for Kids h ttp://easyscienceforkids.com/human-body-systems-for-kids-video/ 4. e Human Body

Rose

Warren

Afroz

Nicholas