Urinary System Review/Test Answers

1. Kidneys are a pair of organs for filtering impurities from the blood and prevents poisons fatally accumulating in the body.
2. Kidneys are bean shaped.
3. Where are the kidneys located? Behind the stomach, one on each side of the spine.
4. Together, the kidneys add up the same size as the heart.
5. Each kidney has how many layers? 3
6. What are the names of the layers? cortex, medulla, and pelvis
7. The cortex and medulla contain tiny blood filtration units called nephrons.
8. A single kidney has more than a million nephrons .
9. Urine is the waste product of filtration, collects in the kidney’s pelvis.
10. About 2 quarts of fluid is removed from the body and about 198 quarts are recovered.
11. The kidneys produce a form of Vitamin D for healthy bones.
12. The kidneys are control the production of red blood cells.
13. Urine is made of up of largely of 4 items. What are they? water, uric acid, urea, and inorganic salt.
14. One pair of kidneys can process 42 gallons of blood a day.

Label the picture below.

1. Kidneys
2. Ureter
3. Bladder
4. Urethra