Terrence Mary Assistant Professor Department of Anatomy Definition The stomach is a muscular bag forming the widest and most distensible part of the digestive tube Location The stomach occupying the ID: 998993
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1. STOMACH By Dr.Berlina Terrence Mary Assistant Professor Department of Anatomy
2. DefinitionThe stomach is a muscular bag forming the widest and most distensible part of the digestive tube. LocationThe stomach occupying the epigastric, umbilical and left hypochondriac regions.
3. Stomach comprises:Two orifices: Cardiac and pyloricTwo curvatures: Lesser and greaterTwo parts: Cardiac and pyloricCardiac part: Fundus and bodyPyloric part: Pyloric antrum and pyloric canal.
4. External features of the stomach
5. Relations of Stomach Visceral RelationsThe anterior surface of the stomach is related to the liver, the diaphragm, transverse colon and the anterior abdominal wall.The posterior surface of the stomach is related to structures forming the stomach bed, all of which are separated from the stomach by the cavity of the lesser sac.These structures are:a. Diaphragmb. Left kidneyc. Left suprarenal gland
6. d. Pancreas e . Transverse mesocolonf. Splenic flexure of the colon g. Splenic artery. Sometimes the spleen is also included in the stomach bed, but it is separated from the stomach by the cavity of the greater sac (and not of the lesser sac). Gastric nerves and vessels ramify deep to the peritoneum.
7. Anterior relations of stomach. Area 1st is covered by the liver; area 2nd by the diaphragm; and area 3rd by the anterior abdominal wall
8. The stomach bed
9. Arteries supplying the stomach
10. Lymphatic drainage of the stomach. Note the manner in which the organ is subdivided into a to d different territories
11. Nerve supply of the stomach: (a) Anterior gastric nerve, and (b) posterior gastric nerve
12. Interior of Stomach• The mucosa of an empty stomach is thrown into folds termed as gastric rugaeOn the mucosal surface there are numerous gastric pitsSubmucous coat Muscle coat:Longitudinal fibres Inner circular fibres encircle the body and are thickened at pylorus (c) The deepest layer consists of oblique fibres which loop over the cardiac notchSerous coat
13. CLINICAL ANATOMYGastric pain is felt in the epigastrium because the stomach is supplied from segments T6 to T9 of the spinal cord, which also supply the upper part of the abdominal wall.Peptic ulcerGastric ulcers are common in people who are always in “hurry”, mostly “worry” about incidents and eat “spicy curry”.Gastric carcinoma, pyloric obstruction.