What CN contains 75% of parasympathetic information?

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Multiple Choice

What CN contains 75% of parasympathetic information?

Explanation:
The main idea is understanding which nerve carries the bulk of parasympathetic output to the viscera. The vagus nerve supplies parasympathetic fibers to most of the thoracic and abdominal organs, including the heart, lungs, and much of the digestive tract. Because it reaches so many organs, it accounts for about three-quarters of the parasympathetic information in the body. The other nerves carry parasympathetic fibers to more limited targets (eye for accommodation, glands in the head, etc.), but they don’t provide widespread visceral parasympathetic innervation. So, the nerve that contains roughly 75% of parasympathetic information is the vagus nerve.

The main idea is understanding which nerve carries the bulk of parasympathetic output to the viscera. The vagus nerve supplies parasympathetic fibers to most of the thoracic and abdominal organs, including the heart, lungs, and much of the digestive tract. Because it reaches so many organs, it accounts for about three-quarters of the parasympathetic information in the body. The other nerves carry parasympathetic fibers to more limited targets (eye for accommodation, glands in the head, etc.), but they don’t provide widespread visceral parasympathetic innervation. So, the nerve that contains roughly 75% of parasympathetic information is the vagus nerve.

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