II.胃 Stomach
Stomach is dilated portion of alimentary canal and has three main functions:
1. Stores food (holds from 1.5~4 liters). Meal is emptied from stomach about 4 hours.
Hale Waihona Puke StomachI) Divisions
Stomach is J – shaped and divided into four portions:①
Cardiac region → Junction with esophagus immediately
inside cardiac orifice; ② Fundus → dome shaped portion under diaphragm; ③ Body → midportion, greatest and
Stomach is relatively fixed at both ends but is very mobile in between.
2. Relation Its anterior surface is behind left lobe of liver, diaphragm and anterior abdominal wall (bare area of stomach). Its posterior surface is separated by omental bursa from following structures → diaphragm, spleen, pancreas, left kidney, left suprarenal gland, transverse colon and its mesocolon. They are called “stomach bed”.