Question

How do carbohydrates, proteins, and fats get digested in human beings?

Answer 1

Carbohydrate Digestion 

• Digestion of cabohydrates starts with buccal cavity where salivary enzymes breaks down the starch into simple sugar molecules. 
• Other sugar molecules are breakdown to glucose in small intestine. 

Protein digestion 

• Proteins are partially digested by pepsin secreted by gastric glands present in the stomach. 
• Then Pancreatic juice secrets trypsin and chymotrypsin enzymes in small intestine where complete digestion of proteins takes place. 

Fat Digestion 

• Fats are digested in small intestine.
• Bile juice present in the liver emulsifies the fat which breaks fats into small globules.
• These small fat globules are converted into glycerol and fatty acids by Lipase enzyme.