Provide at least two examples of the opposite effects of the sympathetic and parasympathetic divisions of the nervous system.

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04-04-2018
Biology

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Provide at least two examples of the opposite effects of the sympathetic and parasympathetic divisions of the nervous system.

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keu keu · Answer 1 · 2018-04-13T08:30:38+02:00

The autonomic nervous system of human body have two division: Sympathetic and Parasympathetic division. These two division of autonomous nervous system have antagonistic effects on the body organs. Sympathetic division innervate in case of emergency. It performs for "fight or flight" response. In such situation, Sympathetic nervous system speeds up heart, increases blood pressure, increase sweet glands secretion, makes more glucose available in blood for body's energy and as such. It dilates pupil focusing for distant vision.
Whereas, Parasympathetic nervous system relaxes the body. It innervate for the resting of the body and respond for rest and digest mechanism. Parasympathetic nervous system slows down heart rate and activates gut for digestion. It contracts pupil for focusing on near vision.

poojatomarb76 poojatomarb76 · Answer 2 · 2022-01-25T07:41:52+01:00

The autonomic nervous system of the human body has two divisions: The sympathetic and Parasympathetic divisions.

These two divisions of the autonomous nervous system have antagonistic effects on the body organs. Sympathetic division innervates in case of emergency.

Fight or Flight reactions-

It performs for a "fight or flight" response. In such a situation, the Sympathetic nervous system speeds up the heart, increases blood pressure, increases sweat glands secretion, makes more glucose available in the blood for the body's energy and as such. It dilates pupil focusing for distant vision.

Whereas, Parasympathetic nervous system relaxes the body. It innervates for the resting of the body and responds to the rest and digest mechanism. The parasympathetic nervous system slows down the heart rate and activates the gut for digestion. It contracts pupils for focusing on near vision.

Therefore, the two examples of the sympathetic and parasympathetic nervous systems are fight or flight reactions.

Learn more about divisions of the nervous system here:

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