Myenteric plexus

• A net-like system of nerves extending the entire length of the GIT, mainly concerned with the control of motor activity

• Stimulation leads to

an increased tone of the gut wall
a increased intensity of the rhythmical contractions
a slight increase in rate of the rhythm of contraction
an increased velocity of peristalsis
inhibition of contraction of the pyloric and the ileocecal valves

Submucosal Plexus

concerned with the control of functions within the inner walls of each gut segment i.e. local absorption, secretion, contraction