L9 Pancreas and Spleen Flashcards
Location of the Pancreas?
Retroperitoneal
From curve of duodenum L2 L3 to
splenic hilum (crosses the transpyloric plane)
Regions of the Pancreas?
Pancreatic Development?
Pancreas = diverticula of duodenum (week 4)
Rotation of duodenum brings ventral bud (with bile duct) posteriorly
Ventral bud gives rise to:
lower head
uncinate process
main pancreatic duct
Dorsal bud gives rise to:
rest of pancreas
accessory duct
Structures Anterior to head of the Pancreas?
pylorus
gastroduodenal artery
pancreatico duodenal
arteries
Structures Posterior to head of the Pancreas
Bile duct
IVC
renal veins
Structures anterior to Neck of the Pancreas?
pylorus
gastroduodenal artery
Structures posterior to Neck of the pancreas?
Superior Mesenteric Artery/Vein
Origin of Portal Vein
Aorta
What is superior mesenteric artery syndrome?
Duodenum is compressed between two arteries (the aorta and the superior mesenteric artery) causing partial or complete blockage of the duodenum
Structures posterior to Body of Pancreas?
Splenic vein
Left kidney, vessels and suprarenal gland
Inferior Mesenteric Vein
Structures posterior to TAIL of Pancreas?
INTRAPERITONEAL!!
Left kidney
Splenic flexure
Splenic hilum
What do the main pancreatic duct (of
Wirsung ) and the common bile duct unite to form?
Form the hepatopancreatic ampulla (of Vater) => projects as the
major duodenal
papilla entering D2 (descending duodenum)
A little higher the accessory pancreatic duct (of Santorini in continuity with the main duct) enters at the minor duodenal papilla.
Arterial Supply of Pancreas?
–Splenic artery
–Superior + inferior
pancreaticoduodenal
arteries
Venous Drainage of Pancreas?
–Splenic vein from body
and tail
–Pancreaticoduodenal
veins drain to superior
mesenteric vein
Innervation of Pancreas?
splanchnic nerves and
vagi via coeliac plexus
- Gallbladder
- Right/Left Hepatic Ducts
- Cystic Ducts
- Common Hepatic Duct
- Bile Duct
- Accessory Pancreatic Duct
- Main Pancreatic Duct
- Descending Duodenum (D2)
- major duodenal
papilla
What does a Pancreaticoduodenectomy entail, what is it also known as?
Whipple’s Procedure involves removing the head of the pancreas, duodenum, the gallbladder and the bile duct
used to treat tumors and other disorders of the pancreas, intestine and bile duct.
Functions of the Spleen?
Immunological
responses to blood
borne antigen
Erythrocyte and
platelet turnover
Iron and haemoglobin
recycling
Haemopoesis
(Foetal and in disease)
Location of Spleen?
Located in Left Hypochondrium (9-11th ribs)
Relationships of the Spleen?
Posterior: Left Diaphragm
Medial: Left Kidney
Anteriorly: Stomach
Inferiorly: Left Colic Flexure
Intraperitoneal Attachments of the Spleen?
Gastrosplenic ligament: To fundus of stomach
Splenorenal ligament: Lateral boundary of lesser sac
Arterial Supply of the Spleen?
Splenic Artery (Branched from Celiac trunk)
Venous Draingage of Spleen?
Splenic vein to portal vein
Innervation of the Spleen?
Coeliac Plexus
