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Anatomy of ( stomach ) digestive system

   NOTES NURSING & MEDICAL STUDENTS Notes for medical studentand nursing student                        

  stomach

introduction::
-The stomach is the dilated portion of the alimentary canal .
-it is situated in the upper part of the abdomen.
-the extending from beneath the left costal margin rigion into the epigastric and umblical regions.
-much of the stomach lies under cover of the lower ribs .
-the stomach relatively fixed at both ends but is very mobile in between.
structure of the  stomach:-
-the stomach is J shaped organ 
-two opening the stomach ,cardiac and pyloric orifices.
-two curvatures,the greater and lesser curvatures .
-two surfaces ,anterior and posterior surfaces .







   Relations of the stomach:
     1) anterior relations :-
     -anterior abdominal 
      -left costal margin 
      -left pleura and lung
      -diaphragm
      -left lobe of the liver 
   2)posterior relations :-
    -lesser sac 
     -diaphragm
     -spleen
     -left suprarenal gland
     -splenic artery
     -pancreas
part of  stomach:
1) fundas- 
2)body -
3)pyloric -
4)pylorus-
\                      
\
\
1)fundas ---
-this is dome shaped and projrcts upwadrd and to the left of the cardiac orifice.
2) body--- 
-this extends from the level of the cardiac orifice to the level of the  incisura angulinris , a
  constant notch in the lower part of the lesser  curvature.
3)pyloric--
-Extends from the incisura  angularis to the pylorus
4) pylorus

blood supply of stomach:-
   1)left gastric artery-
     - arises from the celiac artery .it supplies the lower third of the esophagus and the upper 
      right part of the stomach.
   2) right gastric artery :-
      -arises from the hepatic artery at the upper border of the pylorus and supplies the lower
      right part of the stomach .
  3)short gastric arteries:-
       -arise from the splenic artery and supply fundas of the stomach .
  4) left gastroepiploic artery:-
       -arise from splenic artery and supply the greater curvaturecurvature.

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