HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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oesophagus
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stomach
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large intestine
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small intestine
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Detailed explanation-1: -It is secreted by the oxyntic cells of the gastric gland in the stomach. Gastric juice contains mucous, hydrochloric acid and certain enzymes such as pepsin.
Detailed explanation-2: -Often simplistically described as hydrochloric acid, these species are produced by parietal cells in the gastric glands in the stomach. The secretion is a complex and relatively energetically expensive process.
Detailed explanation-3: -Parietal cells in the mucosa, the inner cell layer of our digestive tract, secrete hydrochloric acid (HCl) into the stomach’s lumen, or cavity.
Detailed explanation-4: -Acid secretion is initiated by food: the thought, smell, or taste of food effects vagal stimulation of the gastrin-secreting G cells located in the distal one third (antrum) of the stomach. The arrival of protein to the stomach further stimulates gastrin output.