At the zone of overlap between the thin and thick filaments, the individual tubules of the reticulum enlarge, fuse, and form expanded chambers called ________.
Fill in the blank(s) with the appropriate word(s).
terminal cisternae
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The process whereby repeated exposure to a hormone can cause a decrease in the number of receptors for that hormone is called
A. down-regulation. B. saturation. C. antagonism. D. inhibition. E. competition.
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 the individual grows to maturity, one would expect that he would
A) have impaired function of the interstitial cells. B) produce large amounts of inhibin. C) be impotent. D) be sterile. E) not develop secondary sex characteristics.
The heart, blood, and blood vessels combine to form which of the following?
A) a group of cells B) an organ system C) the smallest level of organization D) an organ E) an individual living entity
Which of the following is not a process carried out by bacterial flora?
A. Formation of part of the feces B. Digestion of cellulose C. Synthesis of vitamin K D. Digestion of most of the proteins we get in the diet E. Production of some of the gases found in flatus