Stimulation of α1 adrenergic receptors by norepinephrine results in
A) an increase in the amount of intracellular cAMP.
B) a decrease in the amount of intracellular cAMP.
C) decreased membrane permeability to sodium ion.
D) release of calcium ions from intracellular stores.
E) increased membrane permeability to potassium ions.
Correct Answer:
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Q33: The adrenal medullae secrete
A) medullin.
B) epinephrine.
C) norepinephrine.
D)
Q37: Each of the following effects is associated
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Q52: In general,sympathetic preganglionic fibers are _ and
Q53: Drugs known as beta-blockers may be useful
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Q67: Which of the following statements concerning the
Q80: Muscarinic receptors
A) are normally activated by acetylcholine.
B)
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