What Is the Source of Variability in the Response of Smooth

question 2

Multiple Choice

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 duration of neurotransmitter release from the autonomic neurons
• B) the amount of neurotransmitter released into the synaptic cleft
• C) the type of receptor present on the effector organ
• D) the presynaptic modulation of the autonomic neurons
• E) the neurotransmitter released by the autonomic nervous system

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