Thymosins ________
A) facilitate the production of mature T cells
B) phagocytize abnormal red blood cells
C) engulf pathogens
D) defend the body against viral pathogens
A
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Damage to cells of the zona fasciculata of the adrenal cortex would result in
A) the loss of axillary and pubic hair. B) increased volume of urine formation. C) decreased levels of sodium ion in the blood. D) decreased ability to convert amino acids to glucose. E) increased water retention.
The yolk stalk and body stalk fuse during week five, forming the
A) amnion. B) allantois. C) chorion. D) umbilical stalk. E) primitive streak.
All of the following are found in the surface anatomy of the shoulder EXCEPT the ________
A) bony features of the scapula B) deltoid muscle C) bony features of the clavicle D) biceps brachii
Secondary spermatocytes each contain
A) 23 single chromosomes. B) 23 chromosomes, each with a pair of duplicate chromatids. C) twice the diploid number of chromosomes. D) 46 pairs of chromosomes. E) 46 chromosomes.