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Question
The vagus nerve is composed mainly of parasympathetic fibres. The preganglionic fibres of vagus form a network which is known as
The vagus nerve is composed mainly of parasympathetic fibres. The preganglionic fibres of vagus form a network which is known as
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Solution
The correct option is D Auerbach's plexus
Auerbach's plexus (or myenteric plexus) provides motor innervation to both layers of the muscular layer, having both parasympathetic and sympathetic input, whereas Meissner's plexus has only parasympathetic fibres and provides secretomotor innervation to the mucosa nearest the lumen of the gut. It arises from cells in the vagal trigone also known as the nucleus ala cinerea, the parasympathetic nucleus of origin for the tenth cranial nerve (vagus nerve), located in the medulla oblongata. The fibres are carried by both the anterior and posterior vagal nerves. The myenteric plexus is the major nerve supply to the gastrointestinal tract and controls GI tract motility.
Auerbach's plexus (or myenteric plexus) provides motor innervation to both layers of the muscular layer, having both parasympathetic and sympathetic input, whereas Meissner's plexus has only parasympathetic fibres and provides secretomotor innervation to the mucosa nearest the lumen of the gut. It arises from cells in the vagal trigone also known as the nucleus ala cinerea, the parasympathetic nucleus of origin for the tenth cranial nerve (vagus nerve), located in the medulla oblongata. The fibres are carried by both the anterior and posterior vagal nerves. The myenteric plexus is the major nerve supply to the gastrointestinal tract and controls GI tract motility.
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