Intro Lecture

Question 1

4 GI tract layers from outermost to inner-most

Answer 1

1. Serosa
2. Muscularis Externa
3. Submucosa
4. Mucosa

Question 2

The vagus innervates the _____ while the pelvic nerves innervate the _____

Answer 2

• Transverse Colon

- Anus

Question 3

3 Components of Mucosa

Answer 3

1. Muscularis Mucosae
2. Lamina Propia
3. Epithelium/Villi

Question 4

Outermost GI layer is the _____

Answer 4

Serosa

Question 5

Two components of Muscularis Externa

Answer 5

1. Longitudinal Muscle

2. Circular Muscle

Question 6

Myenteric Plexus

Answer 6

Muscle/Movement

Question 7

5 Functions of the Vagus

Answer 7

1. Gi BER Spkes
2. Prim. Esophg AND SI Peristalsis
3. Gastric Accomodation (Stomach Stretch)
4. CCK Release (Bile Release)
5. Mass movesments in large intestine

Question 8

Submucosal Plexus

Answer 8

Secretions

Question 9

What is contained within the sub-mucosa?

Answer 9

Nerves and Blood vessels

Question 10

Four Gastro-Intestinal Functions that are not innervated

Answer 10

1. Saliva; (innervated by facial/glosso)
2. Secondary Esoph. Peristalsis; (Enteric)
3. MMC; (Motilin)
4. Segmentation of SI; (Enteric)

Question 11

Most reabsorption occurs in the _____

Answer 11

jejunum

Question 12

Innermost GI layer is the ____

Answer 12

Mucosa