Anatomy and Physiology
Name ___________________________
1. What is excretion?
2. Wastes of excretion are in the form of _____________________ and _____________________.
3. Metabolic wastes are produced by _________________________________________________.
4. Describe the role of blood in excretion.
5. What is the purpose of the excretory system?
6. Name the organs of the excretory system.
7. How does skin control body temperature?
8. The lungs excrete ________________________ and _____________________ by the process of __________________________
and ____________________________.
9. Name the organs of the human urinary system.
10. Describe the pathway of excretion through the urinary tract.
11. What is the function of the kidney? How can humans live with only one kidney?
12. How does the size of the liver compare to the other organs in the body?
13. State three functions of the liver.
14. What are three conditions/diseases of the excretory system?
1–
2–
3–
15. During excretion, the kidneys function to
a. Remove solid wastes from the body.
b. Cause the skin to perspire, thereby removing excess water.
c. Select wastes for removal while keeping useful nutrients.
d. Remove water from the blood that passes through them.
16. In humans, wastes and useful materials are directly exchanged between the kidneys
e. Tiny tubes and the skin surface.
f. Tiny tubes and the bladder.
g. Veins and arteries and the bladder.
h. Tiny tubes and the blood in surrounding capillaries.
17. Perspiration from sweat glands in the skin helps maintain homeostasis by
i. Excreting nitrogen wastes and salts only.
j. Cooling the body and regulating its temperature only.
k. Adjusting the salt and water balance of the body.
l. Excreting nitrogen wastes and regulating body temperature.
18. The cell gets rid of wastes by the process known as
m. Synthesis.
n. Excretion.
o. Growth.
p. Digestion.
19. The carbon dioxide produced in an animal cell is usually
q. Stored.
r. Digested.
s. Ingested.
t. Excreted.
20. Which are human metabolic wastes?
u. Urea and carbon dioxide.
v. Oxygen and nitrogen.
w. Mineral salts and enzymes.
x. Water and alcohol.
21. Explain in your own words how the excretory system helps us to maintain homeostasis. In your answer
be sure to include an explanation of homeostasis.
22. Review: Explain in your own words how the digestive system helps us to maintain homeostasis.