Question

innermost and outermost layer of wall of gut are respectively

please tell fast
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Answer 1

Answer:

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Explanation:

The wall of alimentary canal possesses four layers- serosa, muscularis, sub mucosa, and mucosa. Serosa is the outermost layer and is made up of a thin mesothelium and connective tissue. Muscularis is formed by smooth muscles usually arranged into an inner circular and an outer longitudinal layer. Sub-mucosa layer is formed of loose connective tissues containing nerves, blood and lymph vessels. Glands are also present in sub-mucosa of duodenum. Mucosa is the innermost layer lining the lumen of the alimentary canal. Mucosa forms irregular folds (rugae) in stomach and villi in small intestine.

Answer 2

Answer:

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.