Question

(c) What are the basic layers of the wall of alimentary canal?

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Answer 1

Answer :-

The GI tract contains four layer :

• The innermost layer is the mucosa, underneath this is the submucosa, followed by the muscularis propria and finally,
• The outermost layer - the adventitia.
• The structure of these layers varies, in different regions of the digestive system, depending on their function.

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Answer 2

Question:-

What are the basic layers of the wall of the alimentary canal?

​Answer:-

• The wall of alimentary canal possesses four layers- serosa, muscularis, sub mucosa, and mucosa.

• The 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.

• The Sub-mucosa layer is formed of loose connective tissues containing nerves, blood, and lymph vessels. Glands are also present in the submucosa of the duodenum.

• The Mucosa is the innermost layer lining the lumen of the alimentary canal.

• Mucosa forms irregular folds (rugae) in the stomach and villi in the small intestine.

Extra Infomation:-

Why are the basic layers of the wall of alimentary canal present?

• The walls of the alimentary canal have the same four basic layers, (also known as tunics) — the mucosa,submucosa, musclaris externa, andserosa.

• Each layer contains a certain tissue type that plays a crucial role in the breakdown of food.

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