Digestive tract wall anatomy Flashcards
What are the layers of the gut wall?
MSMS
Mucosa
Submucosa
Muscularis externa
Serosa/adventitia
What does the mucosa of the gut wall exist of?
epithelium, lamina propria, muscularis mucosa
where is the Meissner nerve plexus?
submucosa
what plexus is in the submucosa of the gut wall?
submucosal nerve plexus
what is the role of the submucosa?
secretion of fluids
which gut wall layer secretes fluid?
submucosa
which plexus does the muscularis externa contain?
myenteric nerve plexus (Auerbach)
submucosal nerve plexus: name?
Meissner
myenteric nerve plexus: name?
Auerbach
what is the role of the muscularis externa layer?
motility
which part of the gut wall is responsible for motility?
muscularis externa
when do you call the outer layer ‘serosa’?
when it’s intraperitoneal
when do you call the outer layer ‘adventitia’?
when it’s retroperitoneal
serosa: intra- or retroperitoneal?
intra
adventitia: intra- or retroperitoneal?
retro