structure of the mammalian gut wall

Cards (9)

what are the 4 surrounding layers of the lumen 
serosa , muscularis ,mucosa and sub-mucosa
what is the serosa 
this is the outer most layer of the gut that contains tough connective tissue
what is the function of the serosa 
protection and lubrication with other abdominal organs during peristalsis
what are the two sections the muscularis 
inner-circular and outer-longitudinal
what is the function of the muscularis 
this makes coordinated waves of contraction to push the bolus of food through the gut
what is the mucosa 
innermost layer of the gut
what is the function of the mucosa in the gut
it secretes mucus which lubricates and protects the mucosa, and it secrets digestive juices and absorbs digested food
What is the sub-mucosa? 
connective tissue layer containing blood and lymph vessels
what is the function of the sub-mucosa 
it contains nerves which coordinates peristalsis