HUMAN NUTRITION

NUTRITION

DIGESTIVE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Gastric juices in the stomach help digest food. This is ____
A
Mechanical digestion
B
Chemical digestion
C
Liver incorporation
D
Gall stones
Explanation: 

Detailed explanation-1: -There is significant chemical digestion in the stomach. Two types of glands exist in the gastric mucosa that aid in chemical digestion: oxyntic glands and pyloric glands.

Detailed explanation-2: -The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria. The mucus covers the stomach wall with a protective coating.

Detailed explanation-3: -Gastric acid, gastric juice, or stomach acid is a digestive fluid formed within the stomach lining. With a pH between 1 and 3, gastric acid plays a key role in digestion of proteins by activating digestive enzymes, which together break down the long chains of amino acids of proteins.

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