The body has kidneys. 2. are waste products excreted through your skin when you sweat.
3. The filter(s) wastes from the blood.
a. kidneys
b. bladder
c. liver
d. lungs
4. Urine flows from the
a. bladder to the kidneys.
b. kidneys to the bladder.
c. stomach to the kidneys.
d. urethra to the bladder.
5. Which word describes the function of the nephrons?
a. Tube
b. Filter
c. Stores
d. Collects
6. What is the main function of your excretory system?
a. to break down food
b. to create insulin
c. to get rid of waste products from your cells
d. to circulate your blood
7. Urine is stored in the before it is pushed out of the body.
a. bladder
b. liver
c. kidney
d. heart
8. Place the following events in sequential order (1-4):

urine passes through the ureters
urine is stored in the bladder
blood enters the kidneys
urine enters the urethra
9. Blood being pumped into the kidneys where it is filtered is an example of which two systems working together?
a. muscular and skeletal
b. excretory and circulatory
c. circulatory and digestive
d. excretory and digestive
10. T or F: The lungs excrete oxygen from the body.