gi tract

Question 1

4 layers of GI tract

Answer 1

• mucosa
• submucosa
• muscularis propria
• adventitia

Question 2

layers of the mucosa

Answer 2

• epithelium
• lamina prorpia
• muscularis mucosa

Question 3

muscularis mucosa

Answer 3

separates the lamina propria from submucosa

Question 4

muscularis propria

Answer 4

• smooth muscle

- inner circular, outer longitudinal

Question 5

what is found between the two layers of muscle in muscularis propria

Answer 5

myenteric nerve plexus

Question 6

type of epi in mucosa of esophagus

Answer 6

NK SSE

Question 7

what is found in submucosa of esophagus

Answer 7

mucous glands

Question 8

upper 1/3 of esophagus is lined with what type of muscle

Answer 8

skeletal

Question 9

where is SEROSA (peritoneum) present in esophagus

Answer 9

peritoneal cavity near the gastroesophageal junction

Question 10

three zones of the stomach

Answer 10

• cardia
• fundus and body
• pyloric antrum

Question 11

what type of epi is seen in the stomach

Answer 11

simple columnar epithelium

Question 12

3 layers of muscularis externa

Answer 12

• inner oblique
• middle circular
• outer longitudinal

Question 13

glands seen in cardia region of stomach

Answer 13

cardiac mucous glands

Question 14

what do cardiac mucous glands secrete

Answer 14

mucous and lysozyme

Question 15

parietal cells secrete

Answer 15

HCl and intrinsic factor

Question 16

chief cells secrete

Answer 16

pepsinogen

Question 17

where do chief cells predominate

Answer 17

lower part of mucosa

Question 18

where do parietal cells predominate

Answer 18

middle part of mucosa

Question 19

where do mucous cells and gastric pits predominate

Answer 19

upper part of mucosa

Question 20

purple with basal nucleus

Answer 20

chief cells

Question 21

fried egg, pink cytoplasm

Answer 21

parietal cell

Question 22

what type of granules do chief cells secrete

Answer 22

zymogen granules

Question 23

pyloric antrum

Answer 23

• long gastric pits
• mucous cells
• neuroendo cells (G cells): secrete gastrin

Question 24

jejunum has transverse folds called

Answer 24

plicae circulares

Question 25

glands between bases of villi

Answer 25

crypts of lieberkuhn

Question 26

lymphoid aggregates in lamina propria called

Answer 26

peyer’s patches

Question 27

where are peyer’s patches found

Answer 27

terminal ileum

Question 28

neuroendocrine cells of small intestine secrete

Answer 28

• secretin
• cholecystokinin (CCK)
• gastric inhibitory peptide

Question 29

paneth cell of small intestine (often in crypts )

Answer 29

-secrete lysozyme and glycoproteins

Question 30

glands in duodenum

Answer 30

brunner’s glands

Question 31

identifying a paneth cell

Answer 31

granules are towards lumen

*pink

Question 32

identifying a neuroendo cell

Answer 32

granules beneath nucleus, away from lumen

*purple

Question 33

the mucosa of large intestine has a ____ appearance

Answer 33

test tube

• no villi
• lots of goblet cells

Question 34

prominent structure of appendix

Answer 34

lymphoid follicles

Question 35

what is required for the follicle

Answer 35

germinal center