The central axis of the hair is the ________.
A. cuticle
B. medulla
C. shaft
D. root
E. hair bulb
Answer: B
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When sodium ions are reabsorbed through the wall of the renal tubule by active transport, chloride ions are
A. secreted by active transport. B. reabsorbed by passive transport. C. reabsorbed by active transport. D. secreted by passive transport.
All cholinergic and some adrenergic receptors are coupled to G proteins
Indicate whether the statement is true or false
Hypotension that is associated with neurogenic shock is the result of:
A) loss of alpha receptor stimulation. B) concomitant internal hemorrhage. C) increased peripheral vascular tone. D) profound peripheral vasoconstriction.
Descent of the testes is stimulated by the ________
A) presence of the X chromosome B) presence of estrogens C) presence of testosterone D) presence of Y chromosome E) absence of the X chromosome