Digestive system IV Flashcards Preview

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Flashcards in Digestive system IV Deck (27)
1

What are the circular folds of the small intestine?

plica circulares

2

In what layer are the gastric pits of the small intestine located?

Plica of Mucosa

3

A lymph nodule with germinal center found in the small intestine would be called what?

Peyer's patch

4

What are the 2 components of the brush border?

Microvilli
Glycocalyx

5

What is the epithelial type of the small intestine?

Simple columnar with goblet cells

6

In what layer is the brush border found?

Tunica mucosa

7

What are villi?

mucosal projections in small intestine

8

What are the structures of the villi?

Lined with columnar absorptive cells (microvilli) and goblet cells and have a core of lamina propria with a lacteal (fat absorption) in the middle

9

What are the crypts of Lieberkuhn?

crypts between villi

10

What do goblet cells secrete?

Mucin & water (mucus)

11

What is the function of enteroendocrine cells? Secretin, Cholecystokinin, serotonin

Secretin: decrease intestinal motility

CCK: stimulate enzymatic, pancreatic secretion, increase intestinal motility

Serotonin: increases gut motility

12

What is the purpose of Paneth cells?

Antibacterial

13

Are Paneth cells found in dogs and cats?

No

14

What is the purpose of M cells?

Present in peyer's patch to endocytose molecules from gut lumen and transport to underlying lymphatic tissue

15

What are Brunner's glands?

Mucus/mixed glands present in submucosa of duodenum

16

Are there rugae/plica/villi present in the large intestine?

No

17

How to tell large intestine from small intestine?

No villi in large intestine
Thick mucosa with lots of goblet cells
Deeper crypts

18

What are taeniae?

Flat bands of muscle found in Large intestine of humans, pigs and horses

19

What are the 3 glands of the anal region?

Anal glands
Glands of the anal sacs
Glands of the circumanal region

20

Where are anal glands located?

Rectoanal junction

21

What are the glands of the anal sacs type of secretion?

Sebaceous
Apocrine

22

What are the 2 types of glands in the circumanal region?

Sebaceous & sweat glands
Hepatoid glands

23

Do the hepatoid glands do anything?

No ducts, form tumors

24

What is the buccal cavity in the bird?

Oral cavity
No lips or cheeks

25

What is the crop?

Esophageal diverticulum

26

What are the glands of the proventriculus (stomach)?

Rugosal glands that open to the surface

Subrugosal glands that open to surface via papillae

27

What is the ventriculus?

Muscular stomach