Hulka Liver Flashcards
What are the 2 surfaces of the liver?
diaphragmatic
visceral
Describe the diaphragmatic surface of the liver.
This is the superior & posterior section of the liver. It includes the bare area of the liver. The IVC runs thru the bare area.
Describe the visceral surface of the liver.
This is the inferior portion of the liver.
H shaped fissures are found here that mark the porta hepatis
What is found in the port hepatis?
portal vein hepatic artery common bile duct lymphatic duct hepatic nerve plexus
T/F Each lobe of the liver has its own arterial, venous, & biliary system.
TRUE
T/F There are 3 lobes in the liver.
FALSE
There are only 2.
Right Lobe: to the right of the falciform ligament; Left lobe: to the left of the falciform ligament
BUT there are 2 smaller lobes that comprise the right lobe.
What are the 2 mini lobes that comprise the right lobe of the liver?
Quadrate Lobe
Caudate Lobe
**caudate is on top
What’s the deal w/ the falciform ligament?
develops from the umbilicus
it is attached to the anterior abdominal wall
becomes the coronary ligament in the bare area of the liver
divides the liver into L & R lobes
What is different about the falciform ligament before & after birth?
Before Birth: contains the umbilical vein
After Birth: umbilical vein becomes the ligamentum trees
What’s the deal w/ the coronary ligament?
it begins @ the superior aspect of the liver where the falciform ligament ends
surrounds the bare area of the liver
contains the left triangular ligament & right triangular ligament
What’s the deal w/ the hepatogastric ligament?
this begins @ the left triangular ligament & goes to the lesser curvature of the stomach
it is a part of the lesser omentum
What runs thru the hepatogastric ligament?
left & right gastric arteries & veins
gastric lymphatics
What’s the deal w/ the hepatoduodenal ligament?
begins @ the caudate lobe
terminates @ the C loop of the duodenum
a part of the lesser omentum
What runs thru the hepatoduodenal ligament?
peripancreatic lymphatics
Which 2 ligaments does the lesser omentum contain?
hepatogastric
hepatoduodenal
What runs thru/along the lesser omentum?
portal triad
Describe the dual blood supply of the liver.
Hepatic Artery (responsible for 30%) Portal Vein (responsible for 70%)
Where does the hepatic artery for the liver come from?
It comes from the common hepatic artery that was a branch off the celiac trunk.
The common hepatic branches into the gastroduodenal & right gastroepiploic branches
After it gives off these branches it is considered the proper hepatic artery
What does the proper hepatic artery branch into?
left & right hepatic arteries
Describe 2 weird variation of the liver arterial blood supply.
Replaced Left Hepatic:
10% of people will have their left hepatic arteries coming off of the left gastric artery
Replaced Right Hepatic:
1-2% of people will have their right hepatic arteries coming directly off of the SMA
Where does the portal vein run? What does it divide into? What empties into it?
It runs behind the bile duct & proper hepatic artery
It divides into R & L portal veins
**SMV, IMV, & Splenic Veins all empty into it.
Describe the venous drainage for the superior aspect of the liver.
there are 3 superior hepatic veins that drain the liver.
Right Vein–>Right Lobe (Quadrate?)
Middle Vein–>Caudate Lobe
Left Vein–>Left Lobe
Describe the venous drainage for the inferior aspect of the liver.
this is the posterior inferior portion of the liver
drains into the IVC
6-18 branches drain the different portion of the liver
T/F During a liver transplant the surgeon makes sure to leave the IVC w/ the donor.
False. They take the IVC w/ it to assure proper venous drainage.
