Stomach and spleen Flashcards
What is the location of inferior esophageal sphincter?
Left of midline at level of left 7th costal cartilage and T11 vertebra
What is achalasia?
Failure of gastroesophageal sphincter to relax during swallowing
What is a common cause of achalasia?
Absence of myenteric plexus
What is the location of the pyloric sphincter?
L1 - transpyloric plane
What are signs of pyloric stenosis?
Non-bilious projectile vomiting
Polyhydramnios
What structures form the bed of the stomach?
Left dome of diaphragm
Spleen
Left kidney
Left adrenal gland
Splenic artery
Pancreas
Transverse mesocolon
What is the sympathetic innervation of the stomach?
T6-T9 thoracic splanchnic N
What is the parasympathetic innervation of the stomach?
Anterior and posterior vagal trunks
What is the lymphatic drainage of the stomach?
Gastric and gastro-omental lymph nodes to pyloric, pancreaticosplenic, and pancreaticoduodenal nodes, to celiac lymph nodes
What artery is most commonly affected by erosion of the stomach from an ulcer?
Left gastric
Where are peptic ulcers located?
Pyloric canal
Duodenum - more common
What artery can be damaged by erosion of the posterior duodenum from peptic ulcers?
Gastroduodenal artery
What are the functions of the spleen?
Filtration of blood by phagocytosis
Hematopoiesis
Lymphopoiesis
What rib is associated with the location of the spleen?
Left 10th rib
What are the impressions on the visceral surface of the spleen?
Gastric impression
Renal impression
Colic impression
Pancreatic impression
What are the ligaments of the spleen?
Gastrosplenic
Splenorenal
Phrenicocolic
Splenophrenic
Where does lymph from the spleen drain?
Pancreaticosplenic lymph nodes
What is the sympathetic innervation of the spleen?
Celiac plexus
Where is the spleen palpable in splenomegaly?
Under the left costal arch
Fracturs of what ribs may damage the spleen?
Left 9th, 10th, and 11th ribs