HISTOLOGY
DIGESTIVE SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Enterokinase
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Rennin
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Gastrin
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Digestin
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Detailed explanation-1: -During meal ingestion, the main hormone responsible for stimulating acid secretion is gastrin, which acts primarily by releasing histamine from enterochromaffin-like cells. Ghrelin and orexin may also function as stimulatory hormones.
Detailed explanation-2: -vagal stimulation (mediated by the neurocrine bombesin, or GRP in humans) the presence of partially digested proteins, especially amino acids, in the stomach. Aromatic amino acids are particularly powerful stimuli for gastrin release.
Detailed explanation-3: -Gastric acid secretion is produced in several steps. Chloride and hydrogen ions are secreted separately from the cytoplasm of parietal cells and mixed in the canaliculi. Gastric acid is then secreted into the lumen of the gastric gland and gradually reaches the main stomach lumen.