Gastroenterology

Question 1

Layers of the gut wall

Answer 1

Mucosa
Submucosa
Muscularis
Serosa/Adventitia = Connective tissue +/- epithelium (stomach -serosa, eosophagus - adventitia)

Question 2

How many teeth do you have and types?

Answer 2

32
8 incisors
4 canines
8 premolars
12 molars

Question 3

How many sphincter’s are there?

Answer 3

upper sphicter near the cricoid cartillage

Lower sphincter

Question 4

Stages of swallowing

Answer 4

4 stages
Stage 0: oral phase - both sphincter closed
Stage 1: pharyngeal phase - 
Stage 2: upper oesophageal phase
Stage 3: lower oesophageal phase

Question 5

What are the cells lining the of the eosphagus type?

Answer 5

Stratified squamous

Question 6

What are the cells lining the of the stomach type?

Where does it change?

Answer 6

Simple columner

Changes from the oesophagus at the Z-line

Question 7

WHy are atheir gastric folds in the stomach?

Answer 7

To allow for expansion and also for mechnical movement

Question 8

Parts of the stomach and their secretion

Answer 8

Cardia
Gastric
Antthrum
Pyloris

Question 9

Types of stomach cells

Answer 9

Chief cell - pepsinogen secreting cells

Parietal cells - pumps hydrogen ions and chloride into gastric lumen

Question 10

How does acid generation work?

Answer 10

Co2+h20 - hc03

Chloride enters

Question 11

If you inhibit carbonic anhydrase in the stomach?

Answer 11

Restrict the amount of HCl produced by the stomach