A: Postganglionic nerve fibers of the parasym | vedclass

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Question

(A) In the parasympathetic nervous system,postganglionic neurons release acetylcholine as the neurotransmitter.In the sympathetic nervous system,postg

Vedclass · Accepted Answer

Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) In the parasympathetic nervous system,postganglionic neurons release acetylcholine as the neurotransmitter.In the sympathetic nervous system,postganglionic neurons release adrenaline (epinephrine) as the neurotransmitter.Therefore,the Assertion is correct.The sympathetic nervous system acts to inhibit intestinal peristalsis to conserve energy during stress,whereas the parasympathetic nervous system stimulates peristalsis to aid in digestion.Therefore,the Reason is also correct and provides a functional explanation for the physiological differences mediated by these neurotransmitters.Thus,both are correct and the Reason is the correct explanation of the Assertion.

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