Much
of the stomach lies under cover of the lower ribs.
It
is roughly J-shaped and has :
1-two
openings, the cardiac and pyloric orifices.
2-two
curvatures, the greater and lesser curvatures.
3-two
surfaces, an anterior and a posterior surface.
The
stomach is relatively fixed at both ends but is very mobile in between. It
tends to be high and transversely arranged
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Parts of the stomach:-
1.Fundus:
This is dome-shaped and projects upward and to the left of the cardiac orifice.
It is usually full of gas.
2.Body:
This extends from the level of the cardiac orifice to the level of the incisura
angularis, (a constant notch in the lower part of the lesser curvature).
3.Pyloric
antrum: This extends from the incisura angularis to the pylorus.
4.Pylorus:
This is the most tubular part of the stomach. The thick muscular wall is called
the pyloric sphincter, and the cavity of the pylorus is the pyloric canal.
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