GI tract innervation (21-22)

Question 1

Intrinsic neurons of the

Answer 1

enteric nervous system

Question 2

axons of extrinsic parasympathetic and sympathetic, and visceral afferent neurons

Answer 2

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Question 3

The networks of neurons and axons (intrinsic and extrinsic components)

Answer 3

form the submucosal (Meissner’s) plexus and myenteric (Auerbach’s) plexus

The submucosal plexus coordinates secretion, absorption and motility of mucosa

The myenteric plexus mainly initiates and controls peristalsis