Beta receptors

A) are especially sensitive to epinephrine and relatively unresponsive to norepinephrine.
B) may produce inhibition only.
C) cause constriction of blood vessels in skeletal muscles.
D) respond by opening ion channels that hyperpolarize the plasmalemma in heart muscle cells.
E) may produce excitation only.


A) are especially sensitive to epinephrine and relatively unresponsive to norepinephrine.

Anatomy & Physiology

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