LAB - GI System Flashcards
1
Q
Four layers of the GI tract
A
- mucosa: epithelium, lamina propria, muscularis mucosa
- submucosa
- muscularis propria: inner circular layer of SM, outer longitudinal
- adventitia (CT only) or serosa
2
Q
serosa
A
CT lined with mesothelium
3
Q
four main types of cell in the gastric mucosa
A
- mucous cells - mucous
- parietal cells - HCl, KCl, electrolytes, gastric IF
- chief cells - pepsinogen, lipase
- cells of the diffuse endocrine system - gastrin
4
Q
six different cells in the small intestine
A
- absorptive
- goblet cells
- Paneth cells
- diffuse endocrine cells
- intraepithelial lymphocytes
- stem cells
5
Q
where are Brunner’s glands found
A
submucosa of Duodenum
6
Q
T or F. As you progress down the GI tract, the goblet cells decrease in number
A
F! increase
7
Q
appendix
A
- histologically resembles the large intestine
- no significant digestive or absorptive function
8
Q
acid produced by goblet cells
A
mucin
9
Q
largest gland in the body
A
liver
10
Q
parenchyma
A
functional cells of the organ
11
Q
functional cells of the liver
A
hepatocytes
12
Q
stroma
A
refers to the connective tissue of the organ
13
Q
hepatic portal vein
A
- delivers a supply of blood directly from the GI tract
- rich in absorbed food products but poor in oxgen
14
Q
hepatic artery
A
supplies liver with oxygen-rich blood
15
Q
components of the portal triad
A
- hepatic portal vein
- hepatic artery
- bile duct
- may also contain lymphatic vessels*
