Stomach

• Stomach has cardiac, fundus, body, pyloric part
• Cardia surrounds cardinal orifice
• Cardiac is posterior to 6th costal cartilage
• Cardia is level with t11 vertebra. 2-4cm from median plane
• Fundus. Most superior. Sits under left lobe of diaphragm. Defined by superior part of cardinal orifice. Lies posterior to 6th rib
• Pyloric part. Funnel shaped outflow section. Antrum is wider part. Pyloric canal is narrower, empties into Pyloric orifice. Pylorus is distal sphincteric region. Circular layer of smooth muscle
• Lesser curvature = point of attachment for lesser omentum. Angular incisure remarks function of body and pyloric antrum.
• Greater curvature = long convex border, point of attachment for greater omentum
• Internal Gastric folds (Gastric rugae) covered with continuous mucos layer. Gastric canal along lesser curvature
• 2 layers of lesser omentum envelop the stomach
• Venous drainage of the stomach goes to the portal vein
• Stomach lymph drians to celiac lymph nodes
• Psns. Anterior and posterior vagal trunks. Sns. T6-t9 greater splanchnic.