GENERAL HISTOLOGY

OESOPHAGUS STOMACH

BODY OF STOMACH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where does protein digestion begin?
A
Mouth
B
Stomach
C
Liver
D
Small Intestine
Explanation: 

Detailed explanation-1: -Digestion of proteins starts in stomach by the action of gastric juice produced by the walls of the stomach. Digestion of protein also takes place in duodenum and ileum by the action of pancreatic and intestinal juice .

Detailed explanation-2: -Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.

Detailed explanation-3: -Digestion of protein starts in stomach of human digestive tract. When we consume food, digestion is a crucial process that must occur at regular intervals. Digestion necessitates the use of specialised enzymes that act on specific compounds. The enzyme pepsin is responsible for the digestion of proteins.

Detailed explanation-4: -Chemical digestion of protein begins in the stomach and ends in the small intestine. The body recycles amino acids to make more proteins.

Detailed explanation-5: -Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach. A low pH (1.5 to 2) activates pepsin.

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