What is the outermost layer of the digestive tract?
The GI tract contains four layers: the innermost layer is the mucosa, underneath this is the submucosa, followed by the muscularis propria and finally, the outermost layer the adventitia.Click to see full answer. In this way, is Serosa the outermost layer? Serosa/Adventitia The outermost layer of the GI tract consists of several layers of