AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Gastric juice doesn’t digest the stomach because;
A
The stomach isn’t food
B
The stomach is inside the body
C
The stomach is lined with mucous
D
No digestion occurs in the stomach
Explanation: 

Detailed explanation-1: -The Stomach does not digest itself because it is lined with epithial cells, which produce mucus. This forms a barrier between the lining of the stomach and the contents. Enzymes, which make up part of the digestive juices are also secreted by the stomach wall, from glands with no mucus barrier.

Detailed explanation-2: -The gastric mucosa serves two primary purposes: to lubricate the food masses in the stomach and facilitate movement within the stomach, and to create a protective barrier to protect the stomach wall from acid and digestive enzymes.

Detailed explanation-3: -Gastric juice is made up of water, electrolytes, hydrochloric acid, enzymes, mucus, and intrinsic factor.

There is 1 question to complete.