Postganglionic autonomic fibers

a. end in a single synaptic knob that releases the neurotransmitter
b. have numerous varicosities that simultaneously release neurotransmitter over a large area of the innervated organ rather than on single cells
c. innervate skeletal, smooth, and cardiac muscle
d. have characteristics a and c
e. have characteristics b and c


B

Anatomy & Physiology

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Anatomy & Physiology