Question

write how digestion occur in humans
pls make the answer simple and clear

Answer 1

◆ Digestion Of Food in Human being ◆


Following is the process of Digestion of Food in a Human beings :-


♣ Digestion in Mouth :

Digestion of food starts in the mouth. here, the food is cut into small pieces by the teeth. The saliva produced by salivary glands is mixed with the food by the tongue. The saliva contains the enzyme salivary amylase , which digests the starch and breaks it into sugar.


♣ Digestion in Stomach :

The Food then passes through the oesaphagus and reaches the stomach . The walls of stomach release Hydrochloric Acid, mucous and the enzyme pepsin. HCL creates an acidic environment in the stomach, Pepsin digests proteins and mucous prevents the stomach wall from erosion.


♣ Digestion in Small Intestine :

The Partially Digested food enters the small intestine .Small intestine receives secreations from liver and pancreas. liver secrets bile which helps in making the food alkaline and also breaks the fats , pancreas secrete three enzymes , which are trypsin , amylase, and lipase. Trypsin digests proteins, amylase digest starch and lipase digests fats.


The Intestinal juice secreated by small intestine completes the digestion of starch into glucose , proteins into Amino Acids and Fats into Fatty Acid and Glycerol.