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WorksheetsThe excretory system
Total questions: 20
Worksheet time: 10mins
Osmoregulation involves the balancing of...
sugar and water levels
salt and water levels
pH and water levels
Temperature and salt levels
The excretory system regulates blood volume by doing what?
making blood cells
breaking down food
eliminating excess water
filtering blood
Which is NOT a major function of the excretory system?
maintain salt levels
clean the blood
regulate blood volume
control bodily functions
What is the function of the urethra?
It filters urea out of the bloodstream
It delivers urine from the bladder to the outside world
It transfers urine from the kidneys to the bladder
It prevents urine from leaking out of the bladder
Place the following events in sequence:
A) Urine passes through the ureters
B) Kidneys filters the blood
C) Urine enters the urethra
B, A, C
C, B, A
B, C, A
A, C, B
Select the excretory system structures. Select all that apply.
Urine is produced from blood that enters the kidney through the
a. renal artery.
b. renal vein.
c. coronary artery.
d. inferior vena cava.
Identify the row below that correctly identifies the number and name of the structure into which the filtrate first passes.
8- glomerulus
7 - proximal tubule
2 - renal artery
1 - Bowman’s capsule
Some of the steps in urine formation are listed below:
1. tubular secretion
2. tubular reabsorption
3. filtration
4. excretion of urine
The order that these events occur in the kidney is _____, _____, _____, and _____. (enter the numbers, no spaces, no commas)
(a)
13. Which of the following materials would not normally be found in glomerular filtrate?
a. water
b. protein
c. urea
d. glucose
Identify the statement that explains the homeostatic response of an adult body that is well-hydrated.
osmoreceptors stimulate the release of ADH ... then the collecting duct becomes more permeable to water
osmoreceptors stimulate the release of ADH ... then the collecting duct becomes less permeable to water
osmoreceptors inhibit the release of ADH ... then the collecting duct becomes more permeable to water
osmoreceptors inhibit the release of ADH ... then the collecting duct becomes less permeable to water
The excretory system is responsible for moving toxic wastes, dissolved molecules, and excess heat. You would conclude that the excretory system contributes to
circulating molecules around the body
maintaining homeostasis in the body
producing egg and sperm cells in the body
gas exchange
