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Microanatomy Exam 3 > Digestive System IV > Flashcards

Digestive System IV Flashcards

(56 cards)

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1
Q

DNES cells are what?

A

Enteroendocrine cells

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2
Q

DNES cells secrete?

A

Secretin
CCK
Serotonin

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3
Q

Secretin function

A

Decreases intestinal motility

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4
Q

CCK stands for?

A

Cholecystokinin

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5
Q

CCK functions

A
  1. Stimulates enzymatic activaty
  2. Stimulates pancreatic secretion
  3. Increases gut motility
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6
Q

Serotonin function in gut

A

Increase gut motility

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7
Q

Paneth cells found in what species?

A
  1. Ox and other ruminants
  2. Horses
  3. Humans
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8
Q

Paneth cells contain?

A

Eosinophilic granules

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9
Q

Eosinophilic granules in Paneth cells produce?

A

Lysozyme

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10
Q

Lyzosyme is?

A

Bacteriocidal protein

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11
Q

Paneth cells are usually found where?

A

End of a gland

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12
Q

M cells are special cells found where?

A

Over GALT

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13
Q

GALT stands for?

A

Gut associated lymphatic tissue

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14
Q

M cell function

A

Endocytose molecules from gut lumen → antigens travel across them to underlying lymphatic tissue

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15
Q

Will you be able to identify M cells with H&E?

A

No, special techniques required

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16
Q

Duodenum has submucosal glands called?

A

Brunner’s glands

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17
Q

Brunner’s gland secretion

A

Mucus or mixed with serous

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18
Q

Mucosa of LI appearance

A
  1. No villi
  2. No rugae
  3. Thicker mucosa than SI
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19
Q

Tunica muscularis in human, swine and horses contain?

A

Taenia

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20
Q

Taenia

A

Flat bands of longitudinal m. in tunica muscularis

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21
Q

Crypts in mucosa are more extensive in ___ cells

A

Goblet cells

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22
Q

Rugae are only in the?

A

Stomach

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23
Q

Intestinal glands are called?

Study These Flashcards
A

Crypts of Lieberkuhn (Crypts)

24
Q

Crypts are found where?

Study These Flashcards
A

Lamina propria of entire intestine (LI and SI)

25
Crypts are what type of gland?
Simple tubular glands
26
Crypts open into?
Intervillous space
27
Anal glands are located where?
Near rectoanal junction
28
Glands of anal sacs have what type of secretions?
1. Apocrine | 2. Sebaceous
29
Glands of circumanal region aka?
Perianal glands
30
Perianal glands have what type of secretions?
Sebaceous and sweat glands associated with hairs
31
Perianal gland shape
Hepatocyte-like "hepatoid glands"
32
Clinical relevance of perianal glands
Perianal adenomas → benign tumors which develop in aged male dogs
33
Ducts of perianal glands
None
34
Anal sacs
Large sac like pockets in lining of anal canal
35
Anal sacs open to?
Lumen
36
Villi are?
Conical projections of mucosa
37
Villi are found only in?
Small intestine
38
Villi are lined by what type of cells?
Columnar absorptive and goblet cells
39
Villi have a core of?
Lamina propria
40
Lacteals
Center of lamina propria
41
Villi is often collapsed, but what happens after a meal?
Is filled with chyle
42
Chyle is?
Fat-laden lymph
43
6 parts of avian digestive tract
1. Buccal cavity 2. Crop 3. Proventriculus 4. Ventriculus 5. SI 6. Cloaca
44
Buccal cavity
Avian mouth (no lips or cheek)
45
Crop aka?
Ingluvies
46
Crop is?
Esophageal diverticulum in avians
47
Proventriculus aka?
True stomach
48
Mucosal (rugosal) glands in proventriculus open to?
Surface
49
Ventriculus aka?
Muscular stomach or gizzard
50
Epithelium of mucosa of SI
Simple columnar with goblet cells
51
Free edges of columnar absorptive cells
Bear microvilli
52
2 components of brush border
1. Microvilli | 2. Glycocalyx
53
2 enzymes attached to microvilli
1. Disaccharidases | 2. Dipeptidases
54
Enterocytes aka?
Columnar absorptive cells
55
Goblet cells tend to increase in number toward the?
Ileum
56
5 cell types in small intestine
1. Columnar absorptive cells (enterocytes) 2. Goblet cells 3. DNES (enteroendocrine) cells 4. Paneth cells 5. M cells

Microanatomy Exam 3 (10 decks)

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