Gastrointestinal system - Enteric nervous system Flashcards
1
Q
What is the enteric nervous system?
A
An intrinsic nervous system of the gastrointestinal system
2
Q
What are the two layers of reflex circuits?
A
Submucosal plexus and myenteric plexus
3
Q
How do the reflex circuits of the small intestine alter the lumen?
A
Increase contractile activity of the lumen to move nutrients across the small intestine
4
Q
How do the reflex circuits of the small intestine alter the intestinal wall?
A
Decrease permeability to allow greater nutrient exchange
5
Q
How do the reflex circuits of the small intestine alter the blood flowl?
A
Blood flow increases to assist with nutrient exchange
6
Q
How many neurons are are there in the gut?
A
500 million
