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Monogastric Stomach - Anatomy & Physiology (view source)

Revision as of 12:58, 4 July 2008

351 bytes added , 12:58, 4 July 2008

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The stomach functions as a reservoir of food where digestion occurs through chemical and mechanical processes. This allows food to be broken down further and absorbed.

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==Development==

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==Functional Anatomy==

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*Stomach split into regions: cardia, ~~fundus~~, body and ~~pylorus~~

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*Stomach split into regions: cardia, fundic, body and pyloric parts

*Entire stomach motile

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*Chief (zygomatic) cells secreting pepsinogen

-Secreted in response to vagus and gastrin

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-Basophilic

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-More abundant in base of glands

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[[Image:Fundic region of glandular stomach.jpg|thumb|right|150px|Fundic Region of Glandular Stomach (Parietal and Chief cells)- Copywright RVC 2008]]

*Goblet cells secreting mucous

-Protects against autodigestion

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-Activates gastric enzymes, e.g. pepsinogen

-Kills microorganisms that enter with food

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-Secreted in response to vagus or pepsin

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-Secreted in response to vagus or pepsin

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-Large, pyramis shaped

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-More abundant in upper region of glands

*3 layers of lamina muscularis: the outer longitudinal, middle circular layers and inner oblique.

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*Pyloric sphincter is thickened tunica muscularis from the middle circular smooth muscle layer

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*Shallower gastric pits in fundic region than pyloric region

Nabrown

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