Week 6: Module 3 Pt. 1

Question 1

What are the 4 layers of the GIT?

Answer 1

1. Mucosa
2. Submucosa
3. Smooth muscle
4. Serosa

Question 2

What is the mucosa layer of the GIT comprised of?

Answer 2

1. Epithelium tissues: mostly simple columnar epithelium and goblet cells for secretion.
2. Lamina propria: loose areolar connective tissue with capillaries for nourishment and absorption.
3. Muscularis mucosae: smooth muscle that produces local movement of mucosa.

Question 3

What is the submucosa layer of the GIT?

Answer 3

Dense connective tissue with glands, blood/lymphs (MALT); also has submucosal plexus (neural network) - controls secretion.

Question 4

What is the function of the smooth muscle layer of the GIT?

Answer 4

Responsible for segmentation and peristalsis; also has myenteric plexus (neural network) - controls motility

Question 5

Function of the serosa layer?

Answer 5

Also known as the visceral peritoneum, it connects to the peritoneal cavity.

Question 6

What are the 3 types of teeth?

Answer 6

Incisors: chisel shaped for cutting.
Canines: for tearing
Pre-molars and molars: crushing and grinding