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Histology > Digestive System > Flashcards

Digestive System Flashcards

1
Q

Pepsin

A

Secreted by peptic cells, enzyme digesting proteins

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2
Q

Mucin

A

Glycoprotein in mucous secreting cells

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3
Q

Canaliculi

A

Tubules

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4
Q

Parietal cells

A

Acid secreting/ oxyntic cells, secretes HCl and intrinsic factor

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5
Q

Peptic cells

A 
Chief/ zymogen/ pepsin secreting cell
Secretes pepsinogen (precursor of pepsin)
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6
Q

Enteroendocrine cell

A

At base of gastric glands- contain secretory granules

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7
Q

Enterocyte

A

Columnar epithelial cells participating in absorption and excretion

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8
Q

Gastric gland

A

Glands in stomach

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9
Q

Brunners glands

A

In duodenum, secrete alkaline mucus

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10
Q

Enteric nervous system

A

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

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11
Q

Submucosal (meissner’s) nerve plexus

A

Plexus controlling submucosa

GI secretion and absorption, contraction of muscular is mucosa

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12
Q

Peyer’s patch

A

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

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13
Q

Mucosa

A

Epithelium- 1st layer

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14
Q

Laminate propria

A

Cellular connective tissue layer

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15
Q

Muscularis mucosa

A

Muscle in mucosal layer

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16
Q

Submucosa

A

2nd layer- connective tissue, blood and lymph

17
Q

Muscularis propria

A

Smooth muscle, 3rd layer

Contracts

18
Q

Adventitia

A

4th layer

Loose supporting tissue w nerves and blood

19
Q

Serous cell (salivary gland)

A

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

20
Q

Mucous cells

A

Secrete mucin, flat nucleus

21
Q

Exocrine gland

A

Excrete factors into ducts

22
Q

Salivary end piece (acinus)

A

Where ducts open into

23
Q

Pancreatic juice

A

Alkaline fluid rich in digestive enzymes and electrolytes

24
Q

Somatostatin

A

Hormone secreted by delta cells of pancreas

25
Q

Acinar cells

A

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

26
Q

F cells of pancreas

A

Secrete pancreatic polypeptide

27
Q

Islets of langerhans

A

Contain alpha and beta cells

28
Q

Endocrine vs exocrine

A

Exocrine into ductal system into epithelium, endocrine into blood directly

29
Q

Body and fundus glands

A

Pepsin, HCl, mucus

30
Q

Cardiac and pyloric glands

A

Mucus

31
Q

What did brunners glands make

A

In pylorus and duodenum,

Make alkaline mucus- neutralises acidic chyme of stomach

32
Q

What lies between villi

A

Crypts of leiberkuhn

33
Q

Ganglion cells found between muscle layers

A

Myenteric plecus of Auerbach - controls GI movements

Histology (8 decks)

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