bio 2073 digestion secretion

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6 Terms

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Mucous neck cell
Mucus and bicarbonate: Physical barrier between lumen and epithelium; buffers gastric acid to prevent damage to epithelium
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Parietal cells
Gastric acid (HCl) and intrinsic factor: Activates pepsin, kills bacteria, and permits vitamin B12 absorption
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Enterochromaffin-like cell
Histamine: Stimulates gastric acid secretion
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Chief cells
Pepsin(ogen) and gastric lipase: Digests proteins and fats
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D cells
Somatostatin: Inhibits gastric acid secretion
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G cells
Gastrin: Stimulates gastric acid secretion