A boy who has not passed through puberty sustains an injury to his anterior pituitary such that FSH is no longer released, but LH is normal. After he grows to maturity, one would expect that he would ________
A) be unable to produce viable sperm
B) be impotent (unable to have an erection)
C) have impaired function of interstitial cells
D) not develop secondary sex characteristics
A
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The central principle of physiology is
A) nutrition. B) reflexes. C) homeostasis. D) stimulation. E) temperature regulation.
Smooth muscle and ________ muscle are directly innervated by the autonomic nervous system.
Fill in the blank(s) with the appropriate word(s).
True or False? The final products of the two meiotic divisions are four haploid daughter cells from an original diploid cell.
Answer the following statement true (T) or false (F)
What is the main action of lysosomes?
a. promote cellular division b. repair the plasma membrane c. destroy free radicals d. produce energy for cells e. break down organic molecules