Human Anatomy & Physiology Spinal Cord, Spinal
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Distance Learning Program Anatomy of the Human Brain/Sheep Brain Dissection
Distance Learning Program Anatomy of the Human Brain/Sheep Brain Dissection This guide is for middle and high school students participating in AIMS Anatomy of the Human Brain and Sheep Brain Dissections. Programs will be presented by an AIMS Anatomy Specialist. In this activity students will become more familiar with the anatomical structures of the human brain by observing, studying, and examining human specimens. The primary focus is on the anatomy, function, and pathology. Those students participating in Sheep Brain Dissections will have the opportunity to dissect and compare anatomical structures. At the end of this document, you will find anatomical diagrams, vocabulary review, and pre/post tests for your students. The following topics will be covered: 1. The neurons and supporting cells of the nervous system 2. Organization of the nervous system (the central and peripheral nervous systems) 4. Protective coverings of the brain 5. Brain Anatomy, including cerebral hemispheres, cerebellum and brain stem 6. Spinal Cord Anatomy 7. Cranial and spinal nerves Objectives: The student will be able to: 1. Define the selected terms associated with the human brain and spinal cord; 2. Identify the protective structures of the brain; 3. Identify the four lobes of the brain; 4. Explain the correlation between brain surface area, structure and brain function. 5. Discuss common neurological disorders and treatments. 6. Describe the effects of drug and alcohol on the brain. 7. Correctly label a diagram of the human brain National Science Education -
Power Wheelchair Alternative Drive Controls in Spinal Cord Injury
Power Wheelchair Alternative Drive Controls in Spinal Cord Injury Kristen Cezat, PT, DPT, NCS, ATP/SMS When a person with a spinal cord injury is unable to use a standard joystick on a Fact Sheet power wheelchair, an alternative drive control and location is required. Depending on the person’s level of injury and musculature that remains innervated, the more common locations of alternative drive control input devices include the head, neck, face, eyes, and tongue. A proportional drive control allows the wheelchair’s speed/direction to mirror the force/direction applied to the input device by the user, most often through a joystick. Proportional drive control options include1: • Standard Joystick: able to move in any direction at any speed. It is often the most intuitive device for adults with injuries at C5 and below. Joysticks are commonly located on either left or right arm rest but can be altered for Produced by location in midline if spasticity or contracture limits neutral shoulder/elbow alignment. • Alternative Joystick (often set at the user’s chin): joysticks vary in size and require less force and deflection to activate the joystick.1 air Drive ControlA non -Optionsproportional drive for control Clients uses commands with to turn on/offSpinal various functionsCord such as direction (forward, back, left, or right) of the wheelchair. Speed is predetermined and not variable to the strength of the command provided. Non- Injury proportional drive controls include1,2: a Special Interest • Sip-and-Puff Group of • Head Array • Head Array/Sip-and-Puff Combo Non-proportional drive controls can be either momentary or latched. -
Basic Brain Anatomy
Chapter 2 Basic Brain Anatomy Where this icon appears, visit The Brain http://go.jblearning.com/ManascoCWS to view the corresponding video. The average weight of an adult human brain is about 3 pounds. That is about the weight of a single small To understand how a part of the brain is disordered by cantaloupe or six grapefruits. If a human brain was damage or disease, speech-language pathologists must placed on a tray, it would look like a pretty unim- first know a few facts about the anatomy of the brain pressive mass of gray lumpy tissue (Luria, 1973). In in general and how a normal and healthy brain func- fact, for most of history the brain was thought to be tions. Readers can use the anatomy presented here as an utterly useless piece of flesh housed in the skull. a reference, review, and jumping off point to under- The Egyptians believed that the heart was the seat standing the consequences of damage to the structures of human intelligence, and as such, the brain was discussed. This chapter begins with the big picture promptly removed during mummification. In his and works down into the specifics of brain anatomy. essay On Sleep and Sleeplessness, Aristotle argued that the brain is a complex cooling mechanism for our bodies that works primarily to help cool and The Central Nervous condense water vapors rising in our bodies (Aristo- tle, republished 2011). He also established a strong System argument in this same essay for why infants should not drink wine. The basis for this argument was that The nervous system is divided into two major sec- infants already have Central nervous tions: the central nervous system and the peripheral too much moisture system The brain and nervous system. -
Study Guide Medical Terminology by Thea Liza Batan About the Author
Study Guide Medical Terminology By Thea Liza Batan About the Author Thea Liza Batan earned a Master of Science in Nursing Administration in 2007 from Xavier University in Cincinnati, Ohio. She has worked as a staff nurse, nurse instructor, and level department head. She currently works as a simulation coordinator and a free- lance writer specializing in nursing and healthcare. All terms mentioned in this text that are known to be trademarks or service marks have been appropriately capitalized. Use of a term in this text shouldn’t be regarded as affecting the validity of any trademark or service mark. Copyright © 2017 by Penn Foster, Inc. All rights reserved. No part of the material protected by this copyright may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the copyright owner. Requests for permission to make copies of any part of the work should be mailed to Copyright Permissions, Penn Foster, 925 Oak Street, Scranton, Pennsylvania 18515. Printed in the United States of America CONTENTS INSTRUCTIONS 1 READING ASSIGNMENTS 3 LESSON 1: THE FUNDAMENTALS OF MEDICAL TERMINOLOGY 5 LESSON 2: DIAGNOSIS, INTERVENTION, AND HUMAN BODY TERMS 28 LESSON 3: MUSCULOSKELETAL, CIRCULATORY, AND RESPIRATORY SYSTEM TERMS 44 LESSON 4: DIGESTIVE, URINARY, AND REPRODUCTIVE SYSTEM TERMS 69 LESSON 5: INTEGUMENTARY, NERVOUS, AND ENDOCRINE S YSTEM TERMS 96 SELF-CHECK ANSWERS 134 © PENN FOSTER, INC. 2017 MEDICAL TERMINOLOGY PAGE III Contents INSTRUCTIONS INTRODUCTION Welcome to your course on medical terminology. You’re taking this course because you’re most likely interested in pursuing a health and science career, which entails proficiencyincommunicatingwithhealthcareprofessionalssuchasphysicians,nurses, or dentists. -
Anatomy of the Spine
12 Anatomy of the Spine Overview The spine is made of 33 individual bones stacked one on top of the other. Ligaments and muscles connect the bones together and keep them aligned. The spinal column provides the main support for your body, allowing you to stand upright, bend, and twist. Protected deep inside the bones, the spinal cord connects your body to the brain, allowing movement of your arms and legs. Strong muscles and bones, flexible tendons and ligaments, and sensitive nerves contribute to a healthy spine. Keeping your spine healthy is vital if you want to live an active life without back pain. Spinal curves When viewed from the side, an adult spine has a natural S-shaped curve. The neck (cervical) and low back (lumbar) regions have a slight concave curve, and the thoracic and sacral regions have a gentle convex curve (Fig. 1). The curves work like a coiled spring to absorb shock, maintain balance, and allow range of motion throughout the spinal column. The muscles and correct posture maintain the natural spinal curves. Good posture involves training your body to stand, walk, sit, and lie so that the least amount of strain is placed on the spine during movement or weight-bearing activities. Excess body weight, weak muscles, and other forces can pull at the spine’s alignment: • An abnormal curve of the lumbar spine is lordosis, also called sway back. • An abnormal curve of the thoracic spine is Figure 1. (left) The spine has three natural curves that form kyphosis, also called hunchback. an S-shape; strong muscles keep our spine in alignment. -
Neurogenic Erectile Dysfunction. Where Do We Stand?
medicines Review Neurogenic Erectile Dysfunction. Where Do We Stand? Charalampos Thomas 1,* and Charalampos Konstantinidis 2 1 Urology Department, General Hospital of Corinth, 20131 Corinth, Greece 2 Urology & Neurourology Unit, National Rehabilitation Center, Ilion, 13122 Athens, Greece; [email protected] * Correspondence: [email protected] Abstract: Erectile Dysfunction (ED) is the persistent inability to attain and maintain an erection sufficient to permit satisfactory sexual performance, causing tremendous effects on both patients and their partners. The pathophysiology of ED remains a labyrinth. The underlying mechanisms of ED may be vasculogenic, neurogenic, anatomical, hormonal, drug-induced and/or psychogenic. Neurogenic ED consists of a large cohort of ED, accounting for about 10% to 19% of all cases. Its diversity does not allow an in-depth clarification of all the underlying mechanisms nor a “one size fits all” therapeutical approach. In this review, we focus on neurogenic causes of ED, trying to elucidate the mechanisms that lie beneath it and how we manage these patients. Keywords: erectile dysfunction (ED); neurogenic; sexual dysfunction (SD); phosphodiesterase type-5 inhibitors (PDE5I); spinal cord injury (SCI); multiple sclerosis (MS) 1. Introduction Erectile dysfunction (ED) is defined as the persistent inability to attain and maintain an erection sufficient to permit satisfactory sexual performance [1]. Besides the obvious, it has tremendous effects on the patient’s psychosocial health, and it affects not only their quality of life but the lives of their partners [2]. Citation: Thomas, C.; Konstantinidis, The pathophysiology of ED remains a labyrinth since many pathways can co-exist, C. Neurogenic Erectile Dysfunction. thus contributing negatively. Where Do We Stand? Medicines 2021, Traditionally ED was divided into three large cohorts, organic, psychogenic and of 8, 3. -
Is It Really Sciatica August, 2017
Is It Really Sciatica August, 2017 By Dr. Derek Conte One of the most common complaints we see from patients is that of sciatic pain. They will say, “I have sciatica!” And when I ask, “How do you know it is sciatica?” they will say that’s what their friend said, or that they went online and did a medical search, or my favorite: that their “regular” doctor told them. So, what is sciatica, what are its symptoms, and what exactly is the sciatic nerve? I’ll tell you that sciatica is one for the most misdiagnosed conditions we see. The sciatic nerve is the largest nerve in the body and is made up of five nerves which arise from the low back and sacrum. These nerves converge and travel beneath the buttocks and down the outside rear of the thigh to the back of the knee, where they divide. The tibial nerve goes straight down the back of the calf around the inside of the ankle and on to the underside of the foot. The two peroneal nerves cover the rest of the lower leg and top of the foot (see chart). Sciatica is the irritation of the sciatic nerve and can be caused in several ways. First, compression of the nerve must be present or there would be no pain. Beginning centrally and going out from the spinal cord the causes may be 1) Central canal stenosis which squeezes the entire cord and produces bilateral symptoms. 2) A subluxation (malposition of vertebrae) compresses nerves at the spine. 3) A bulging disc or osteophyte (bony spur) causing stenosis of intervertebral foramen, or a dramatic loss of disc height can also leave too little room for the nerves to exit the spine. -
A. PNS = Cranial and Spinal Nerves PNS Provides Connections Between
Anatomy Lecture Notes Chapter 14 A. PNS = cranial and spinal nerves PNS provides connections between body and CNS sensory vs motor visceral vs somatic PNS components: 1. sensory receptors - monitor changes in environment (stimuli) convert stimuli into signals sent viA sensory neurons to CNS 2. motor endings - control effectors a. somatic axon terminal of somatic motor neuron contains neurotransmitter (ACh) stored in vesicles motor end plate of skeletal muscle cell folded for large surface area; contains ACh receptors b. visceral visceral motor axon has varicosities containing vesicles of neurotransmitter membrane of effector cell contains receptors for the neurotransmitters 3. nerves and ganglia - connect CNS to receptors and motor endings Strong/Fall2008 page 1 Anatomy Lecture Notes Chapter 14 B. classification of receptors 1. by structure a. specialized dendritic endings of sensory neurons used for general senses free / unencapsulated example: root hair plexus (also called hair follicle receptor) encapsulated - dendrites enclosed in c.t. capsule that amplifies or filters stimuli example: Pacinian corpuscle b. receptor cells (specialized epithelial cells or neurons) that synapse with dendrites of afferent neurons \ used for special senses 2. by location of stimulus a. exteroceptor b. interoceptor c. proprioceptors are located in skeletal muscles, tendons, joints and ligaments they monitor the position and movement of the body muscle spindles Golgi tendon organs joint kinesthetic receptors 3. by type of stimulus detected a. mechanoreceptor -
Spinal Meninges Neuroscience Fundamentals > Regional Neuroscience > Regional Neuroscience
Spinal Meninges Neuroscience Fundamentals > Regional Neuroscience > Regional Neuroscience SPINAL MENINGES GENERAL ANATOMY Meningeal Layers From outside to inside • Dura mater • Arachnoid mater • Pia mater Meningeal spaces From outside to inside • Epidural (above the dura) - See: epidural hematoma and spinal cord compression from epidural abscess • Subdural (below the dura) - See: subdural hematoma • Subarachnoid (below the arachnoid mater) - See: subarachnoid hemorrhage Spinal canal Key Anatomy • Vertebral body (anteriorly) • Vertebral arch (posteriorly). • Vertebral foramen within the vertebral arch. MENINGEAL LAYERS 1 / 4 • Dura mater forms a thick ring within the spinal canal. • The dural root sheath (aka dural root sleeve) is the dural investment that follows nerve roots into the intervertebral foramen. • The arachnoid mater runs underneath the dura (we lose sight of it under the dural root sheath). • The pia mater directly adheres to the spinal cord and nerve roots, and so it takes the shape of those structures. MENINGEAL SPACES • The epidural space forms external to the dura mater, internal to the vertebral foramen. • The subdural space lies between the dura and arachnoid mater layers. • The subarachnoid space lies between the arachnoid and pia mater layers. CRANIAL VS SPINAL MENINGES  Cranial Meninges • Epidural is a potential space, so it's not a typical disease site unless in the setting of high pressure middle meningeal artery rupture or from traumatic defect. • Subdural is a potential space but bridging veins (those that pass from the subarachnoid space into the dural venous sinuses) can tear, so it is a common site of hematoma. • Subarachnoid space is an actual space and is a site of hemorrhage and infection, for example. -
SCI Facts and Figures at a Glance 2019.Pdf
Spinal Cord Injury Facts and Figures at a Glance 2019 SCI Data Sheet This data sheet is a quick Incidence reference on demographics and the use of services by people Given the current U.S. population size of 328 million people, a recent estimate showed that the annual with spinal cord injury in the incidence of spinal cord injury (SCI) is approximately 54 cases per one million people in the United United States (U.S.). Much of the States, or about 17,730 new SCI cases each year. New SCI cases do not include those who die at the information reflects recent data location of the incident that caused the SCI. collected since 2015. Historical Data Source: Jain NB, Ayers GD, Peterson EN, et al. Traumatic spinal cord injury in the United States, information reflects data 1993-2012. JAMA. 2015;313(22):2236-2243. collected since the early 1970s. Prevalence The estimated number of people with SCI living in the United States is approximately 291,000 persons, with a range from 249,000 to 363,000 persons. The National Spinal Cord Injury Database is a prospective Data Source: Lasfargues JE, Custis D, Morrone F, Carswell J, Nguyen T. A model for estimating spinal longitudinal multicenter study cord injury prevalence in the United States. Paraplegia. 1995;33(2):62-68. that currently captures data from an estimated 6% of new Age at Injury SCI cases in the United States. The average age at injury has increased from 29 years during the 1970s to 43 years recently. The database has demographic and condition status data Gender through 2018 for 33,406 people About 78% of new SCI cases are male. -
The Nervous System: Sensory and Motor Tracts of the Spinal Cord
15 The Nervous System: Sensory and Motor Tracts of the Spinal Cord PowerPoint® Lecture Presentations prepared by Steven Bassett Southeast Community College Lincoln, Nebraska © 2012 Pearson Education, Inc. Introduction • Millions of sensory neurons are delivering information to the CNS all the time • Millions of motor neurons are causing the body to respond in a variety of ways • Sensory and motor neurons travel by different tracts within the spinal cord © 2012 Pearson Education, Inc. Sensory and Motor Tracts • Communication to and from the brain involves tracts • Ascending tracts are sensory • Deliver information to the brain • Descending tracts are motor • Deliver information to the periphery © 2012 Pearson Education, Inc. Sensory and Motor Tracts • Naming the tracts • If the tract name begins with “spino” (as in spinocerebellar), the tract is a sensory tract delivering information from the spinal cord to the cerebellum (in this case) • If the tract name ends with “spinal” (as in vestibulospinal), the tract is a motor tract that delivers information from the vestibular apparatus (in this case) to the spinal cord © 2012 Pearson Education, Inc. Sensory and Motor Tracts • There are three major sensory tracts • The posterior column tract • The spinothalamic tract • The spinocerebellar tract © 2012 Pearson Education, Inc. Sensory and Motor Tracts • The three major sensory tracts involve chains of neurons • First-order neuron • Delivers sensations to the CNS • The cell body is in the dorsal or cranial root ganglion • Second-order neuron • An interneuron with the cell body in the spinal cord or brain • Third-order neuron • Transmits information from the thalamus to the cerebral cortex © 2012 Pearson Education, Inc. -
Dermatomal Distribution | Definition of Dermatomal Distribution by Medical
10/13/2016 Dermatomal distribution | definition of dermatomal distribution by Medical dictionary Dermatomal distribution | definition of dermatomal distribution by Medical dictionary http://medicaldictionary.thefreedictionary.com/dermatomal+distribution dermatome (redirected from dermatomal distribution) Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. dermatome [der´mah-tōm] 1. the area of skin supplied with afferent nerve fibers by a single posterior spinal root. 2. the lateral part of an embryonic somite. 3. an instrument for removing splitthickness skin grafts from donor sites; there are many different kinds, divided into three major types: knife, drum, and motordriven. Dermatomes. Segmental dermatome distribution of spinal nerves to the front, back, and side of the body. C, Cervical segments; T, thoracic segments; L, lumbar segments; S, sacral segments; CX, coccygeal segment. Dermatomes are specific skin surface areas innervated by a single spinal nerve or group of spinal nerves. Dermatome assessment is done to determine the level of spinal anesthesia for surgical procedures and postoperative analgesia when epidural local anesthetics are used. From Thibodeau and Patton, 1999. drum dermatome a dermatome consisting of a cylindrical drumlike apparatus coated with adhesive that rolls over the skin while a blade moves across the surface and cuts the graft free. knife dermatome the simplest type of dermatome, which is used to remove grafts by a freehand technique. motordriven dermatome a dermatome driven by a power source; motordriven dermatomes cut with a backandforth blade action. MillerKeane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc.