Question

Succus entericus is secreted by
A.Gastric glands
B.Islets of langerhans
C.Crypts of lieberkuhn, Paneth cells and Brunner’s glands
D.Goblet cells.

Answer 1

We know that the small intestine has the principle role in digestion and absorption of food materials in our body. There are several glands in our digestive system that secretes several enzymes which helps for digestion of food materials in our gut.

Complete answer:
First part of the small intestine is called duodenum. It continues as a long coiled part called Jejunum and a highly coiled final part called Ileum. Ileum opens into the large intestine.
We know that there are several glands in our digestive system that secretes several enzymes which helps for digestion of food materials in our gut. Keep in mind that there are several layers in the wall of our alimentary canal. They are serosa, muscularis layer, submucosa and mucosa. Know that most glands of our digestive system are present in the mucosa layer of the wall of the alimentary canal.

Mucosal layer in our small intestine consists of several goblet cells. These cells secrete mucus to the intestine. We can see several finger like projections in small intestine. These are called villae. They are covered with brush border epithelium. Secretions of these brush border cells along with mucus secreted by goblet cells form the intestinal juice. Know that it is also called Succus Entericus.
It includes the secretion from crypts present between the villi called crypts of lieberkuhn and Brunner’s glands which is present in the submucosa of intestine. Secretions from paneth cells that are also present within the crypts also enters the intestine and helps in digestion.

Hence the correct answer is OPTION(C)

Note: From the stomach, it is the acid rich partially digested food that reaches the small intestine. So it is neutralised by intestinal secretions which are alkaline in nature and protects the intestinal wall from damage.