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Set 43 The Adrenal Glands

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Question 1

(Multiple Choice)

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Exercise increases catecholamine release.Stimulation of α\alpha -adrenergic receptors specifically leads to:

A)An increase in insulin secretion.
B)Vasodilation of skeletal muscle arterioles.
C)Vasoconstriction of splanchnic arterioles.
D)Vasodilation of veins and lymphatic vessels.
E)A positive inotropic effect on cardiac function.

Answer

Question 2

(Multiple Choice)

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Cortisol is considered a "stress hormone." One of its direct actions that help an individual survive a physiological stress (e.g.,surgery)is:

A)To increase hepatic gluconeogenesis.
B)To increase skeletal muscle protein synthesis.
C)To increase hepatic lipogenesis.
D)To decrease adipose tissue lipolysis.
E)To increase hepatic glycolysis.

Answer

Question 3

(Multiple Choice)

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ACTH has rapid,intermediate,and longer term effects on the function of the zona fasciculata.Which of the following is a target of rapid effects?

A)Adrenal hypertrophy.
B)Cortisol secretion.
C)Steroidogenic acute regulatory (StAR)protein activation.
D)CYP21A2 expression.
E)Low-density lipoprotein (LDL)receptor expression.

Answer