GI Tract 2 Flashcards

1
Q

Esophagus - strat squam ep.

Loose CT

A

mucosa

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2
Q

dense irregular CT

sebacous glands

A

submucosa

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3
Q

upper portion = skeletal muscle, voluntary

lower portion = smooth muscle, involuntary

A

muscularis externa

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4
Q

Stomach - simple columnar ep.

A

mucosa

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5
Q

apical ep. secretion

A

mucous, acid, proteases

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6
Q

basal ep. secretion

A

hormones, paracrine factors

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7
Q

thickening; @ cardiac and pyloric openings = sphincters

A

muscularis externa

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8
Q

strat squam –>cuboidal

A

gastro-esophageal junction

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9
Q

secrete zygomens; actiivated by acid hydrolysis (pepsin)

A

chief cells

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10
Q

secrete peptides - increase peristalsis

secrete gastrin - releases pyloric sphincter

A

DNES cells

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11
Q

absorptive mucosa
simple columnar, goblet cells, paneth cells, loose CT
lacteal

A

small intestine

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12
Q

mucous secretions “Brunner’s Glands” protects acid from stomach

A

submucosa

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13
Q

absorptive, no villi, crypts/glands

A

mucosa of large intestine

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14
Q

no Brunner’s glands

A

submucosa of large inestine

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15
Q

anal sphincters, smooth muscle internally, skeletal muscle extrenally

A

muscularis externa

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16
Q

simple columnar –> strat squam

A

rectum –> anus