Digestive System

Question 1

Pepsin

Answer 1

Secreted by peptic cells, enzyme digesting proteins

Question 2

Mucin

Answer 2

Glycoprotein in mucous secreting cells

Question 3

Canaliculi

Answer 3

Tubules

Question 4

Parietal cells

Answer 4

Acid secreting/ oxyntic cells, secretes HCl and intrinsic factor

Question 5

Peptic cells

Answer 5

Chief/ zymogen/ pepsin secreting cell
Secretes pepsinogen (precursor of pepsin)

Question 6

Enteroendocrine cell

Answer 6

At base of gastric glands- contain secretory granules

Question 7

Enterocyte

Answer 7

Columnar epithelial cells participating in absorption and excretion

Question 8

Gastric gland

Answer 8

Glands in stomach

Question 9

Brunners glands

Answer 9

In duodenum, secrete alkaline mucus

Question 10

Enteric nervous system

Answer 10

Quasi autonomous part of nervous system, controls motor function, blood flow, mucous secretion and transport, immune and endocrine dunction

Question 11

Submucosal (meissner’s) nerve plexus

Answer 11

Plexus controlling submucosa

GI secretion and absorption, contraction of muscular is mucosa

Question 12

Peyer’s patch

Answer 12

Part of GALT (Gut associated lymphoid tissue), in immune response

Question 13

Mucosa

Answer 13

Epithelium- 1st layer

Question 14

Laminate propria

Answer 14

Cellular connective tissue layer

Question 15

Muscularis mucosa

Answer 15

Muscle in mucosal layer

Question 16

Submucosa

Answer 16

2nd layer- connective tissue, blood and lymph

Question 17

Muscularis propria

Answer 17

Smooth muscle, 3rd layer

Contracts

Question 18

Adventitia

Answer 18

4th layer

Loose supporting tissue w nerves and blood

Question 19

Serous cell (salivary gland)

Answer 19

Secrete protein rich fluid, round nuclei, RER at base and secretory granules at apex

Question 20

Mucous cells

Answer 20

Secrete mucin, flat nucleus

Question 21

Exocrine gland

Answer 21

Excrete factors into ducts

Question 22

Salivary end piece (acinus)

Answer 22

Where ducts open into

Question 23

Pancreatic juice

Answer 23

Alkaline fluid rich in digestive enzymes and electrolytes

Question 24

Somatostatin

Answer 24

Hormone secreted by delta cells of pancreas

Question 25

Acinar cells

Answer 25

Secrete inactive enzyme precursors (zymogens, eg amylase, trypsin)

Question 26

F cells of pancreas

Answer 26

Secrete pancreatic polypeptide

Question 27

Islets of langerhans

Answer 27

Contain alpha and beta cells

Question 28

Endocrine vs exocrine

Answer 28

Exocrine into ductal system into epithelium, endocrine into blood directly

Question 29

Body and fundus glands

Answer 29

Pepsin, HCl, mucus

Question 30

Cardiac and pyloric glands

Answer 30

Mucus

Question 31

What did brunners glands make

Answer 31

In pylorus and duodenum, | Make alkaline mucus- neutralises acidic chyme of stomach

Question 32

What lies between villi

Answer 32

Crypts of leiberkuhn

Question 33

Ganglion cells found between muscle layers

Answer 33

Myenteric plecus of Auerbach - controls GI movements