What is the source of variability in the response of smooth muscle cells from different organs to autonomic nervous activity (some relax to sympathetic nervous output while others contract) ?
A) the amount of neurotransmitter released into the synaptic cleft
B) the presynaptic modulation of the autonomic neurons
C) the duration of neurotransmitter release from the autonomic neurons
D) the neurotransmitter released by the autonomic nervous system
E) the type of receptor present on the effector organ
Correct Answer:
Verified
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