Question

Name the different secretions of stomach and mention functions

also.​

Answer 1

Answer:

Stomach secrets hydrochloric acid(HCl), digestive juice and

mucus.

a) Function of mucus- it protects inner lining of stomach.

b)Function of HCl-

i. It makes the medium of stomach acidic

ii. It kills the bacteria present in food.

c) Function of Digestive juices-digest protein partially

Q3. Name the glands associated with digestive system

Answer 2

Answer:

Stomach Secretion

Gastric secretions facilitate the digestion of protein which commences in the stomach by acid denaturation and hydrolysis by gastric proteases or pepsins.

Gastric Secretion

Gastric secretion is stimulated by the act of eating (cephalic phase) and the arrival of food in the stomach (gastric phase). Arrival of the food in the intestine also controls gastric secretion (intestinal phase). The secreted fluid contains hydrochloric acid, pepsinogen, intrinsic factor, bicarbonate, and mucus. Gastric secretion of acid and pepsinogen follows stimulation of the oral and gastric vagal afferents. Efferent vagal pathways synapse with submucous plexus neurons, which innervate secretory cells via several important bioactive molecules, including gastrin, histamine, and somatostatin. In the stomach, there is some digestion of carbohydrate and protein but very little absorption, except for some fat-soluble substances. The mucus–bicarbonate layer protects the stomach lining from autodigestion by acid.

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