10/20: Digestive Glands II Flashcards
Where does the pancreas fit into?
Lesser curvature of duodenum
What is a pancreas a combination of functions?
Endocrine and exocrine
What kind of peritoneal is a pancreas?
Secondary retroperitoneal organ, covered with parietal peritoneum (tail is exception, it is mesenteric)
What does the main pancreatic duct drain into?
Hepatopancreatic ampulla (of Vater) into the duodenum, accessory pancreatic duct (not present in everyone) can also drain more superiorly
What kind of blood supply does the pancreas have?
Dual blood supply
What is the pancreas most supplied by?
celiac artery
since it’s present at the foregut/midgut divide gets some supply from superior mesenteric
What is the pancreas a derivative of?
Foregut
What is the body and tail of pancreas supplied by?
Splenic artery (from celiac aa)
What is the head and neck of the pancreas supplied by?
Superior pancreaticoduodenal artery (from celiac aa)
What is the head and uninate process supplied by?
Inferior pancreaticoduodenal artery (from superior mesenteric aa)
What are plicae circulare?
Folds that lie in walls of duodenum “circular ridges,” increase surface area for absorption
What is the major duodenal papilla?
Bump of mucosa where hepatopancreatic ampulla of vater (opening) will empty bile and pancreatic juices into lumen of duodenum
IN THE 2ND PART OF THE DUODENUM
What kind of muscle is the sphincter of oddi?
Smooth muscle
What is the function of the sphincter of oddi?
Prevents bile from continuously emptying into the duodenum, located around the major duodenal papilla
What is the minor duodenal papilla?
Smaller bump of mucosa where accessory pancreatic duct will enter the lumen of duodenum (only releases pancreatic juices)
Where is the spleen located?
In upper left quadrant
Posterior
(in contact with posterior diaphragm and up against greater curvature of stomach)
What is the most lateral and posterior organ in the upper left quadrant?
Spleen
What kind of organ is the spleen?
Mesenteric
What does the gastrosplenic ligament contain?
Short gastric vessels that bridge between spleen and greater curvature of stomach
What does the lienorenal ligament contain?
Splenic artery and vein
pancreas tail
What ligaments make up the lesser omentum?
Hepatogastric ligament and hepatoduodenal ligament
Describe the parietal peritoneum and pain
Very pain sensitive with somatic pain (through ventral rami)
Describe the visceral peritoneum and pain
No sensation with visceral pain (backwards through sympathetics)
Describe the nerves that innervate anterior abdominal wall and parietal peritoneum
Same nerves that innervate skin of anterior abdominal wall will innervate same location’s parietal peritoneum in posterior abdominal wall
ex: pancreatitis, can have visceral pain from inflamed organ but peritoneum can also become inflamed causing somatic pain
Splenomegaly
enlarged spleen that becoes palpable below the costal margin (normal spleen is size of palm)
What is a splenomegaly caused by?
Blood back up from liver or infections
What is susceptible to injury?
Splenomegaly, can have a laceration or rupture of spleen that is a consequences from left side rib injury (car crash)
A. Gallbladder
B. Portal Vein
C. Splenic vein
D. Left colonic flexure
E. Right lobe of livr
F. Inferior vena cava
G. Aorta
H. Left kidney
I. Spleen
*right of B is the pancreas
*between C & D is the stomach
*black area on right under stomach is the lesser sac
