PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Parasympathetic
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Sympathetic
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Either A or B
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None of the above
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Detailed explanation-1: -The parasympathetic nervous system, also known as “rest and digest, ‘’ can be thought of as functioning in opposition to the sympathetic nervous system. Its functions include: A decrease in heart rate and contractility of cardiac muscle. Constriction of the ciliary muscle and the pupil for near vision.
Detailed explanation-2: -The parasympathetic nervous system acts like a brake. It promotes the “rest and digest” response that calms the body down after the danger has passed.
Detailed explanation-3: -In the stomach and intestines, parasympathetic stimulation of M receptors leads to increased motility and relaxation of sphincters. Stimulation of M receptors also increases gastric secretions to aid in digestion. In the gallbladder, parasympathetic stimulation of M3 receptors stimulates contraction to release bile.