Physiological Anatomy of the GIT

Question 1

What’s the length of the gastrointestinal tract?

Answer 1

10m long

Question 2

The gastrointestinal tract extends from the ______ to the _______

Answer 2

Mouth
Rectum

Question 3

The functional organisation of the gastrointestinal tract is in what order?

Answer 3

Mouth - Oral cavity - Pharynx (Oropharynx) - Esophagus - Stomach - Small intestine - Large intestine

Question 4

The innermost layer of the GIT wall is the _____

Answer 4

Mucosa

Question 5

What 3 layers make up the mucosa of the GIT?

Answer 5

Epithelium
Lamina propria
Muscularis mucosae

Question 6

The submucosa is the _____ layer of the GIT wall (moving outwardly)

Answer 6

Second

Question 7

What is Meissner’s plexus?

Answer 7

This is a network of nerves found in the submucosa of the GIT wall. It is otherwise known as the Submucosal plexus

Question 8

The muscular layer of the GIT wall consists of two sublayers called ___________ and ___________

Answer 8

The circular layer (Inner)
The longitudinal layer (Outer)

Question 9

The myenteric plexus is otherwise known as ___________

Answer 9

Auerbach’s plexus

Question 10

The myenteric plexus is located where?

Answer 10

Between the inner circular and outer longitudinal sublayers of the muscular layer of the GIT wall

Question 11

The GIT is provided innervation by the __________ nervous system

Answer 11

Enteric

Question 12

The __________ nervous system is often referred to as the ‘Little Brain’

Answer 12

Enteric