Mrs. Keadle JH Science

Name______period _____ date assigned______date due ______date returned ______

The Excretory System

Match the following vocabulary words to their definition. Please write a capital letter in the blank.

A. tube that urine travels to leave the body. 1. kidneys B. sac-like muscular organ that stores urine. 2. ureters C. tiny structures that filter blood in the kidneys.

3. bladder D. filters blood and eliminates cellular waste. Returns salt, ions and glucose to the blood. 4. urethra E. two narrow tubes that urine flows through to get to the bladder.

5. nephron F. excess salt is released when you sweat. 6. sweat gland

1 The Excretory System Mrs. Keadle JH Science

Which of the following is NOT an 7 Two body systems work together 8 organ of excretion? to help remove waste products

from blood. What are these two systems? F the kidneys

A circulatory and excretory G the skin

B skeletal and digestive H the lungs

J the pancreas C circulatory and digestive

D muscular and excretory

Which cell organelle has a 9 The main function of the 10 excretory system is to - similar function to the excretory

system? Hint: which organelle helps the cell get rid of waste?

A produce enzymes to help

digest food F mitochondria B collect and remove waste products from the body G nucleus

C prevent disease and fight H lysosome infections J ribosome

D carry oxygen and nutrients to the body’s cells

2 The Excretory System Mrs. Keadle JH Science

11 The excretory system in the human body has several components. Some of them are identified in the diagram below.

What is the relationship between the kidneys, ureters, and urinary bladder?

A They work together to transport blood.

B They work independently with specialized functions.

C They work together to maintain the chemical balance of blood.

D They work as storage organs for fluids to prevent dehydration.

12 A ureter carries liquid waste 13 Which cell organelles have a between which structures? similar function the excretory

system?

F a kidney and the bladder A nucleus and cell membrane

G a nephron and a kidney B cell wall and golgi body

H a glomerulus and a nephron C lysosome and golgi

J the bladder and the outside D mitochondria and nucleus

of the body

3 The Excretory System Mrs. Keadle JH Science

15 Which of the following correctly 14 Which of these organs is part of the excretory system? pairs the structure and function

of the bladder?

F kidney A a pair of tubes; waste G liver transport

H small intestine B a muscular sac; storage of liquid waste J stomach

C a network of blood vessels; waste elimination

D a thin tube; filtration of waste from the blood

16 The diagram below shows some structures of the human excretory system.

Which of these structures filters wastes from the blood and regulates the amount of water in the body to maintain homeostasis?

F R

G S

H T

J W

4 The Excretory System