what are the three types of cells found in gastric gland? give their function.
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Gastric glands have three major types of cells namely
(i) mucus neck cells which secrete mucus;
(ii) peptic or chief cells which secrete the proenzyme pepsinogen; and
(iii) parietal or oxyntic cells which secrete HC1 and intrinsic factor (factor essential for absorption of vitamin B12).
(i) mucus neck cells which secrete mucus;
(ii) peptic or chief cells which secrete the proenzyme pepsinogen; and
(iii) parietal or oxyntic cells which secrete HC1 and intrinsic factor (factor essential for absorption of vitamin B12).
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Three types of cells found in gastric gland and functions
Explanation:
- The three types of cells found in gastric glands and their secretions are
- Mucus neck cells : It secrete mucus Mucus provides lubrication and protection to the mucosal epithelium from the excoriating effect of HCl.
- Peptic or chief cells : It secrete pepsinogen Pepsinogen converts proteins into proteoses which are further converted into peptones.
- Oxyntic cells or parietal cells : It secrete HCl and intrinsic factors. HCl provides acidic pH 1.8 which is necessary for the action of pepsins. Intrinsic factors are required for the absorption of vitamin B12.
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