When is the generation of an action potential impossible, no matter the strength of the stimulus?
A) absolute refractory period B) threshold
C) depolarization D) relative refractory period
Answer: A
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Which of the following is not found within the seminiferous tubule?
A) spermatogonia B) spermatocytes C) nurse cells D) interstitial endocrine cells E) spermatids
There are three different types of cones, each one sensitive to different light energies. These cones are designated
A) red, yellow, and blue.
B) red, green, and blue.
C) red, green, and yellow.
D) red, white, and blue.
ADH (antidiuretic hormone) secretion will increase when
A. blood osmolality increases. B. blood pressure increases. C. blood volume increases. D. blood pressure decreases. E. Both blood osmolality increases and blood pressure decreases are correct.
Sperm are produced in the _____ and complete maturation in the _____
A. epididymis; testes B. ductus deferens; epididymis C. seminiferous tubules; prostate gland D. seminiferous tubules; epididymis E. seminiferous tubules; vas deferens