Impotence occurs when
A. the erectile tissues of the penis fill with blood.
B. semen accumulates in the urethra.
C. an erection cannot be achieved or maintained.
D. semen moves out of the urethra.
E. sperm cell production decreases.
C
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In an arteriole, if the blood vessel radius is 2 units and then vasoconstricted to 1 units, the resistance:
a. the resistance decreases 16 times. b. the resistance increases 16 times. c. flow will be decreased. d. both (a) and (b) above. e. both (b) and (c) above.
What type of epithelium would one expect to compose the alveoli (air sacs) in the lungs? Defend your answer.
What will be an ideal response?
There are three regions of the kidney; the outermost region is known as the ________.
a. renal artery b. nephron c. renal columns d. renal cortex e. afferent arteriole
The accumulation of fluid in the interstitial space is called ________.
Fill in the blank(s) with the appropriate word(s).