Cells Flashcards
mucous cells
- mucus
- most abundant, NOT goblet cells (found in intestines and respiratory tract)
parietal (oxyntic) cells
- HCl, intrinsic factor
- Ach, gastrin, histamine
- gastric region of stomach
chief cells (peptic)
•pepsinogen, gastroferrin
-pepsinogen –> pepsin at pH < 5
•gastric region of stomach
enetroendocrine cells
•gastrin (stomach), secretin, CCK, GIP (large - rare - and small intestine)
stem cells
- regeneration
- bases of glands
enterocytes
- digetion, absorption, IgG transport
- small and large intestine
Paneth cells
- lysozyme, other anti-microbials
- small intestine, large intestine proximal colon only
goblet cells
- mucin
- small intestine
M cells
- transfer antigens from lumen –> lymphoid follicle
- Follicle Associated Epithelium (FAE) of respiratory tract and small intestine
Langerhans cells
- oral antigens –> lymphocytes
- stratified squamous epithelium
ameleoblast cells
- secrete enamel
- lost on tooth eruption
odontoblast cells
- secrete dentin
- pulp cavity
cementocyte cells
•secret cementum
serous cells
- synthesize amylase, lysozyme; transport ions, fluid and antibodies
- salivary glands - serous acini and demilune acini
mucous cell
- secrete mucin
- salivary glands - mucus acini and demilune acini
myoepithelial cell
- within basal lamina - contractile
- salivary glands
intercalated duct cell
•salivary gland
striated duct cell
- ion transport
- salivary glands
excretory duct cell
•salivary gland
G cell
- secrete gastrin
- GRP, amino acids, Ach (indirectly, Ach stimulates enteric cells to relase GRP)
- pyloric antrum of stomach
S cells
- secrete secretin
- dudenum and jejunum
K cells
- secrete GIP
- throughout small intestine
L cells
- secrete GLP1
- throughout small intestine and upper colon
I cells
- secrete CCK
- duodenum and jejunum
enterochromaffin cell
- histamine
- submucosa
mucus vs. mucin
Mucus is a “slimy” material that coats many epithelial surfaces and is secreted into fluids such as saliva. It is composed chiefly of mucins and inorganic salts suspended in water.
Mucins are a family of large, heavily glycosylated proteins.
