Motility Of The Gut

Question 1

What are the layers of the muscle in the gut? What nervous system is in the gut?

Answer 1

1. Inner circular
2. Outer longitudinal

Enteric nervous system

Question 2

How does the gut contract using these muscle?

Answer 2

Peristalsis

Question 3

What is the role of the autonomic nervous system in the control of the gut?

Answer 3

Parasympathetic ( rest and digest) - switches on
Sympathetic (fight or flight) - generally switches off

Question 4

What enteric nervous system?

Answer 4

A division of the autonomic nervous system.
It’s a mesh like system of neurons that controls the function of the Gi tract

Question 5

What is a hormone?

Answer 5

A chemical substance produced in the body that controls and regulates the activity of certain cells and organs

Question 6

What are the two parts of the brain that control vomiting?

Answer 6

1. Chemoreceptors trigger zone (CTZ)- detects circulating toxins
2. Vomiting centre - recieved input from CTZ and from Gi tract and coordinates the vomiting reflex

Question 7

What is vomiting?

Answer 7

The force of expelling vomiting using the diaphragm and abdominals wall muscles that contract.