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The Urinary System
Test Description: All about the urinary system
Instructions: Answer all questions to get your test result.
1) In addition to water, the principal components of urine are
A
amino acids and fatty acids
B
urea and salts
C
hydrochloric acid and bases
D
ammonia and bile
2) The nephron is the structural unit of the human
A
liver
B
kidney
C
lung
D
intestine
3) In humans, the ureter transports urine from the
A
liver to the kidney
B
blood to the kidney
C
kidney to the urinary bladder
D
urinary bladder outside of the body
4) The correct pathway for urine to flow out of the body is
A
kidney--ureter--bladder--urethra
B
bladder--ureter--kidney--urethra
C
kidney--urethra--bladder--ureter
D
urethra--bladder--kidney--ureter
5) What is the main function of a nephron?
A
It regulates the chemical composition of the blood
B
It breaks down red blood cells to form nitrogenous wastes
C
It forms urea from the waste products of protein metabolism
D
It absorbs digested food from the contents of the small intestine.
6) After reabsorption in nephrons is completed, the fluid that is left in the tubules is transported to the
A
urinary bladder
B
bile duct
C
circulatory system
D
Bowman's capsule
7) In humans, the organ that most directly regulates the concentration of water in the blood is the
A
liver
B
pancreas
C
kidney
D
heart
8) In humans, which substances are normally filtered out of the blood by the nephrons and then excreted?
A
water, carbon dioxide, and glucose
B
water, glycogen, and urea
C
urea, water, and mineral salts
D
glucose, water, and red blood cells
9) A disorder that causes narrowing of the urethra would interfere most directly with the
A
maturation of gametes in the gonads
B
release of bile from the gallbladder
C
release of fluid from the urinary bladder
D
pumping of blood out of the heart
10) in humans, the immediate result of a blockage in one ureter would be to
A
decrease the amount of urine entering the bladder
B
prevent filtration of the blood
C
limit the ability to store urine
D
stop the relase of urine from the body
*select an answer for all questions
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