4 - basic histology Flashcards
4 layers of GI tract?
mucosa
submucosa
muscularis propria
serosa/adventitia
3 layers of the mucosa?
epithelium
lamina propria
muscular mucosae
4 types of mucosal types in GI tract?
protective
secretory
absorptive
absorptive/protective
where is protective mucosa found?
oral cavity
pharynx
anal canal
oesophagus
where is secretory mucosa found?
stomach only
where is absorptive mucosa found?
entire SI
where is absorptive/protective mucosa found?
entire LI
epithelium of the stomach?
simple columnar
what is present in the lamina propria of the stomach?
gastric pits which secrete mucus
function of mucus in stomach?
protects the epithelial lining from stomach acids
how many layers are there in the muscularis external of the stomach?
3 -
inner oblique
middle circular
outer longitudinal
oesophagus - type of epithelium?
stratified squamous
epithelium in small and large intestine?
simple columnar
