G.I. tract Flashcards Preview

CELL1001 > G.I. tract > Flashcards

Flashcards in G.I. tract Deck (17)
Loading flashcards...
1

Features of the oesophagus

1. No epithelium in outside layer, squamous near lumen
2. Muscularis mucosaw help to push content of gut

2

Function features of stomach

1. Vit. B12 -> intrinsic factor for absorption
2. Holds 4 litres
3. Food leaves through pyloric sphincter
4. Ruggae increases S.A.

3

The stomach has 3 layers of muscularis externa

Oblique, circular, longitudinal

4

Each cell in the stomach is around

10 microns

5

Epithelium that lines gastric pits

Cuboidal -> mucus secretion

6

The gastric gland produces ____ of gastric juice per day

2-3

7

Parietal tissue in the stomach secretes

HCl

8

Chief cells in the stomach secretes

The enzyme pepsinogen which is a precursor to pepsin

9

Endocrin cells in the stomach produce

Gastrin

10

Permanent ridges in the small intestine

Plicae

11

Crypt of Lieberkulin

Alongside base of villi - secrete intestinal juices

12

What lies between the muscularis externa and serosa in the small intestine?

Myenteric plexus

13

There are more nerve cell driven contractions in the ____ than ____

gut, s.c.

14

____ stain allows a view of nerves

Silver

15

Paneth cells of the villus secrete _____ and _____ and are arranged in ______

lysosomes and phagocytes , patches

16

Function of enterocyte cells

Absorption

17

Features of large intestine

1. Crypts with goblet cells no villli
2. Columnar epithelium : microvilli