Show experimentally that l mucas protects our stomach wall from hcl
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Gastric Secretion
Gastric secretion is stimulated by the act of eating (cephalic phase) and the arrival of food in the stomach (gastric phase). Arrival of the food in the small intestine also controls gastric secretion (intestinal phase). The secreted fluid contains hydrochloric acid, pepsinogen, intrinsic factor, bicarbonate and mucus. Gastric secretion of acid and pepsinogen follows stimulation of oral and gastric vagal afferents. Efferent vagal pathways synapse with submucous plexus neurons which innervate secretory cells via several important bioactive molecules including gastrin, histamine, and somatostatin. In the stomach, there is some digestion of carbohydrate and protein, but very little absorption except for some fat-soluble substances. The mucus-bicarbonate layer protects the stomach lining from auto digestion by acid.
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