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COB Histology > Lecture 33: Upper GI Histology II > Flashcards

Lecture 33: Upper GI Histology II Flashcards

1
Q

Gastric glands

A

Simple branched tubular glands with narrow isthmus opening through pits and base of gland extending into lamina propria

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2
Q

Mucous neck cells

A

Secrete soluble mucous (note: different from goblet cells)

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3
Q

Stem cells

A

Replace other cells in gastric pit due to rapid turnover of cells in the stomach

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4
Q

Chief cells

A

Secrete pepsinogen

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5
Q

Parietal cells

A

Manufacture HCl and secrete intrinsic factor

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6
Q

Enteroendocrine cells

A

Secrete hormones and serotonin

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7
Q

What features of the GI tractincrease surface area?

A

Size of small and large intestine, plicae circulares, villi, and microvilli

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8
Q

Microvillus

A

Contain glycoproteins and glycocalyx; bundles of actin cross-linked to each other and webbed to plasma membrane for support

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9
Q

Glycocalyx

A

Array of brush-border enzymes (maltase, sucrase, ismaltase, etc.) produced by small intestinal cells

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COB Histology (24 decks)

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