in human alimentary canal,name the site of complete digestion of various components of food.Explain the process of digestion
Answers
•MOUTH(salivary gland):- starch digestion.The salivary amylase converts the starch into maltose.
•STOMACH:- protein digestion.The HCl presnt in the stomach activates an protein digesting enzyme called pepsin .
•LIVER:- fat digestion .Also known as emulsifiaction of fat.Large globules of fat are broken down into fatty acid and glycerol.
But small intestine is site of complete digestion of all components of food .
Digestion:
Food enters the mouth or buccal cavity where it mixes with the saliva and the salivary amylase breaks down starch.
Next it travels down the oesophagus and enters the stomach.
The Hcl present softens food and activates pepsin digesting protein.
The food is neutralized before entering small intestine
Here absorption of nutrients takes place with help of finger like projections called villi.
Next food enters large intestine where the undigested waste food passes.
Later is reaches rectum and is excreted through the anus.
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Answer:digestion
Explanation:the breaking down of food into simpler substances is known as digestion.
1.FIRSTLY,in humans,the food is taken in through the mouth from where it goes into the buccal cavity.
2.FOOD THAT HAS BEEN CHEWED IN THE MOUTH IS PUSHED DOWNWARD INTO THE OESOPHAGUS.
3.the stomach receives the food from the oesophagus and passes it into the small intestine.
4. the food gets absorbed by the small intestine with the help of several juices .
5. the undigested food enters the large intestine.here the excess of water and some minerals are absorved from the undigested food.
6. the left over waste part of food passes to the rectum.
7. the faeces is now eliminated through the anus.