Flashcards in GI: Anatomy of liver, gall bladder and pancreas Deck (14):
Describe the biliary tree
Begins with left and right hepatic ducts which drain bile from the liver
Then there is the common hepatic duct which joins to the cystic duct which is a continuation of the gallbladder
The common hepatic and cystic join to make the common bile duct
This joins with the pancreatic duct which empties into duodenum via major duodenal papilla
Whats the blood supply to the pancreas?
The pancreatic branches of the splenic artery
The head is also supplied by the sup and inf pancreaticoduodenal arteries which are branches of the gastroduodenal and superior mesenteric arteries
What is the blood supply to the spleen?
The splenic artery which arises from the coeliac trunk
Venous drainage is the splenic vein which combines with superior mesenteric vein to form the hepatic portal vein.
What are the ligaments of the liver?
The falciform ligament: attaches anterior liver to anterior abdo wall . The free edge of this ligament contains the ligamentum teres which is a remnant of the umbilical vein. Attaches right and left lobes.
L and R coronary ligaments: attach superior liver to diaphragm
L and R triangular ligaments: attach superior liver to diaphragm
What structure helps to suspend the liver in the abdominal cavity?
The liver is secured to the IVC
What are the lobes of the liver?
Caudate - superior
Quadrate - inferior
What is the porta hepatis?
A deep fissure between the caudate and quadrate lobes of the liver which transmits all the vessels, nerves and ducts.
What is the bare area of the liver?
Why is it important clinically?
A large triangular surface where there is no peritoneal covering - it is located between the two layers of the coronary ligament.
It is clinically important because it is a site where infection can spread from the abdominal to thoracic cavity.
What structures pass through the porta hepatis?
hepatic portal vein
hepatic artery proper
Common hepatic duct
Hepatic branch of the Vagus Nerve
What are some serious duodenal ulcer complications?
If the duodenal wall is perforated this can result in peritonitis and erosion of the gastroduodenal artery
What are some features that help distinguish the jejunum from the ileum?
The jejunum has thick intestinal wall and ileum has thin
The jejunum has longer vasa recta than ileum
The jejunum has less arterial loops than ileum
The jejunum is red and the ileum is pink
What is the blood supply of the small intestine?
Proximal to major duodenal papilla is the gastroduodenal artery
Distal to major duodenal papilla is the inferior pancreaticoduodenal artery
Jejunum and ileum: superior mesenteric artery
What features would allow you to distinguish the large intestine from the small intestine?
The large intestine has omental appendices on its anterior surfaces - pouches of peritoneum filled with fat
The large intestine has 3 strips of muscle called the teniae coli which produce haustra
The large intestine has a much wider diameter