PHYSIOLOGY
GASTROINTESTINAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pepsinogen
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Intrinsic factor
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Acid hydrochloric
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Secretin
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Detailed explanation-1: -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.
Detailed explanation-2: -Parietal cells are responsible for gastric acid secretion, which aids in the digestion of food, absorption of minerals, and control of harmful bacteria.
Detailed explanation-3: -The parietal cells are located in the middle part of the glands of the fundus-body region of the stomach. They secrete gastric acid, i.e. hydrochloric acid (approximately 0.16 M, pH ≥ 0.8) and secrete the intrinsic factor, which is a vitamin B12-binding protein.
Detailed explanation-4: -Acetylcholine (muscarinic type receptor) Gastrin. Histamine (H2 type receptor)