What are intestinal glands ? How many types of intestinal glands are t

1.	What are intestinal glands ? How many types of intestinal glands are there ?
Answer» Intestinal glands: These are formed by the surface epithelium of the small intestine. These are of two types: Crypts of Lieberkuhn and Brunner's glands. (i) (a) The crypts of Lieberkuhn are simple, tubular structure which occur throughout the small intestine between the villi. (b) They secrete digestive enzymes and mucus. (c) The mucus is secreted by the goblet cells. (d) These crypts have at the base paneth cells and argentaffin cells. (ii) (a) The Brunner's glands are found only in the duodenum and are located in the submucosa. (b) They secrete a little enzyme and mucus. (c) The mucus protects the duodenal wall from getting digested. (d) Digestion of most of nutrients take place in the duodenum under the action of various enzyme.

What are intestinal glands ? How many types of intestinal glands are there ?

Answer»

Intestinal glands: These are formed by the surface epithelium of the small intestine.

These are of two types: Crypts of Lieberkuhn and Brunner's glands.

(i) (a) The crypts of Lieberkuhn are simple, tubular structure which occur throughout the small intestine between the villi.

(b) They secrete digestive enzymes and mucus.

(c) The mucus is secreted by the goblet cells.

(d) These crypts have at the base paneth cells and argentaffin cells.

(ii) (a) The Brunner's glands are found only in the duodenum and are located in the submucosa.

(b) They secrete a little enzyme and mucus.

(c) The mucus protects the duodenal wall from getting digested.

(d) Digestion of most of nutrients take place in the duodenum under the action of various enzyme.