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• Cardia: Narrow transitional zone about 1.5-3 cm between the esophagus and the stomach
• Fundus and Body: Identical in microscopic structure and are sites of gastric glands releasing acidic gastric juice
• Pylorus: Funnel-shaped region that opens into the small intestine
• Identify the ff:

  A) Cardia

  B) Fundus

  C) Body

  D) Pyrolus

  
• What is this?

  Stomach

  
• Mucosa, submucosa, muscularis externa, and serosa are also present where?

  fundus
• The surface epithelium of fundic is what?

  Simple columnar epithelium
• An EMPTY stomach has TEMPORARY FOLDS in the MUCOSA called RUAGE
• The muscularis externa of the fundic has 3 layers of what type of muscle?

  smooth muscle
• What are the 3 layers of muscularis externa in fundic?

  Inner OBLIQUE, Middle CIRCULAR, Outer LONGITUDINAL
• Inner oblique: not complete and not always seen at the stomach wall
• Middle circular: sectioned longitudinally
• Outer longitudinal: sectioned transversely
• Label the following:

  A) Inner oblique layer

  B) Middle circular layer

  C) Outer longitudinal layer

  
• describe the glands in the stomach?

  simple tubular
• What stomach gland is limited to the transition region or cardia?

  cardiac glands
• Cardiac cells has PALE-STAINING, MUCUS-SECRETING COLUMNAR CELLS
• Which stomach gland may exhibit basal branching?

  Gastric glands
• What are the 4 cells found in the stomach?

  zymogenic or chief cells, enteroendocrine cells, mucous neck cells, and parietal cells
• Parietal cells: LARGE, eosinophilic/basophilic
• Parietal cells: Produce HCL and gastric-intrinsic factor found in the RED BONE MARROW
• Mucous neck cells: pale-staining
• Mucous neck cells: produces mucus that covers, lubricates, and protects from corrosive actions
• Zymogenic or Chief cells: basophilic
• Zymogenic or chief cells: contains PEPSINOGEN
• Enteroendocrine cells: Gastrin and USUALLY NOT SEEN
• Label:

  A) Mucous neck cells

  B) Parietal cells

  C) Zymogenic or chief cells

  
• What are the 3 regions of a gastric gland?

  isthmus, neck, and base or fundus
• ISTHMUS: Epithelial and Parietal cells
• NECK: Mucous neck cells and some parietal cells
• BASE OR FUNDUS: Chief cells and few FEW parietal cells