In men, when blood levels of testosterone rise
A) the pituitary gland secretes LH.
B) the hypothalamus secretes LH.
C) the pituitary gland stops secreting LH.
D) the hypothalamus starts secreting LH-RH.
Correct Answer:
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Q29: Spermatogenesis takes place in the
A)seminiferous tubules.
B)Leydig cells.
C)epididymus.
D)vas
Q30: The average human male produces about
A)25 sperm
Q31: The scrotum
A)houses and protects the testes.
B)produces immature
Q32: Why can frequently taking very hot baths
Q33: Which the following hormones stimulates the secretion
Q35: The correct sequence regarding the path that
Q36: When Yao jumps into the cold swimming
Q37: Compared to sex hormones levels in females,
Q38: What is the length of time it
Q39: When the foreskin does not retract from
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