GI Histology I Flashcards

0
Q

what comes after the mucosa?

A

submucosa, muscularis externa, serosa OR adventitia

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1
Q

what makes up the lining mucosa?

A

lining epithelium, lamina propria, muscularis mucosa

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2
Q

what is the plexus found in the submucosa?

A

Meissner’s plexus

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3
Q

what plexus is found between the layers of muscle making up the muscularis externa (i.e., between the inner circular and the outer longitudinal layers of the muscularis externa)?

A

Auerbach’s Plexus (also termed the myenteric Plexus)

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4
Q

Peyer’s patches

A

A cluster of lymph nodes embedded in the small intestine (ileum specifically)

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5
Q

large folds in the stomach are called:

A

rugae

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6
Q

large folds in the small intestine are called:

A

plicae

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7
Q

small projections into the intestines:

A

villi

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8
Q

the esophagus is lined by a protective epithelium that is:

A

non-keratinized, stratified squamous

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9
Q

why is the base of the lining epithelium darker?

A

there is a lot of mitotic activity, producing daughter cells to produce those sloughed off

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10
Q

the first upper third of the esophagus is lined by ____ muscle

A

skeletal

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11
Q

the middle third of the esophagus is lined by ____ muscle

A

smooth and skeletal

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12
Q

the lower third of the esophagus is lined by ____ muscle

A

smooth

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13
Q

cardiac glands of the esophagus are found at:

A

the junction of the esophagus and the stomach, between the cricoid cartilage and the fifth tracheal ring

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14
Q

is skeletal muscle at the top of the esophagus under voluntary control? Why?

A

no, innervated by parasympathetics from the vagus

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15
Q

what makes up the lining of the stomach?

A

simple columnar epithelium

16
Q

all the glands in the stomach are found in the ____, which means they are above ___

A

lining mucosa, submucosa

17
Q

there are ____ glands in the submucosa of the stomach

A

no

18
Q

the major cells found in the base of the stomach glands are called ____

A

chief cells

19
Q

the second most common cell type found in the stomach glands are called _____

A

parietal cells

20
Q

the third type of cell found in the neck of the stomach glands are called:

A

mucus neck cells

21
Q

endocrine cells found on the periphery of the glands are called:

A

enteroendocrine glands, aka argentaffin cells