GI Histology I Flashcards Preview

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Flashcards in GI Histology I Deck (22):
0

what makes up the lining mucosa?

lining epithelium, lamina propria, muscularis mucosa

1

what comes after the mucosa?

submucosa, muscularis externa, serosa OR adventitia

2

what is the plexus found in the submucosa?

Meissner's plexus

3

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)?

Auerbach's Plexus (also termed the myenteric Plexus)

4

Peyer's patches

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

5

large folds in the stomach are called:

rugae

6

large folds in the small intestine are called:

plicae

7

small projections into the intestines:

villi

8

the esophagus is lined by a protective epithelium that is:

non-keratinized, stratified squamous

9

why is the base of the lining epithelium darker?

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

10

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

skeletal

11

the middle third of the esophagus is lined by ____ muscle

smooth and skeletal

12

the lower third of the esophagus is lined by ____ muscle

smooth

13

cardiac glands of the esophagus are found at:

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

14

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

no, innervated by parasympathetics from the vagus

15

what makes up the lining of the stomach?

simple columnar epithelium

16

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

lining mucosa, submucosa

17

there are ____ glands in the submucosa of the stomach

no

18

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

chief cells

19

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

parietal cells

20

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

mucus neck cells

21

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

enteroendocrine glands, aka argentaffin cells