GENERAL HISTOLOGY

Detailed explanation-1: -It is the longest cranial nerve and the only one to leave the head and neck region. The vagus nerve travels into the thoracic and abdominal cavities, providing parasympathetic supply to visceral organs.

Detailed explanation-2: -Neuroanatomy, Cranial Nerve 10 (Vagus Nerve)

Detailed explanation-3: -vagus nerve, also called X cranial nerve or 10th cranial nerve, longest and most complex of the cranial nerves. The vagus nerve runs from the brain through the face and thorax to the abdomen. It is a mixed nerve that contains parasympathetic fibres.

Detailed explanation-4: -The vagus nerve represents the main component of the parasympathetic nervous system, which oversees a vast array of crucial bodily functions, including control of mood, immune response, digestion, and heart rate.

Detailed explanation-5: -The left vagus crosses in front of the left subclavian artery to enter the thorax between the left common carotid and subclavian arteries. It descends on the left side of the aortic arch, which separates it from the left pleura, and travels behind the phrenic nerve.