GI anatomy Flashcards
name the 4 liver lobules
left, right, caudate, quadrate
how many functional segments of the liver are there?
8
I, II, III, IVa, IVb, V, VI ,VII, VIII
venous drainage of the liver?
left middle and right hepatic veins all drain into the IVC
arterial blood supply to the liver
DUAL supply portal vein (80%) and hepatic artery (20%)
where does the proper hepatic artery come from?
coeliac trunk -> common hepatic (gives off gastroduodenal artery) to become proper hepatic artery
purpose of the falciform ligament?
connect the anterior surface of the liver to the abdominal wall. It is not an embryological remnant
what is the ligamentum teres hepatis (round ligament) and where is it located?
round ligament is a remnant of the ductus venosis and is located on the free edge of the falciform ligament
left triangular ligament?
on the posterior surface of the liver, a mix of lesser omentum and falciform ligament
coronary ligament?
attaches the liver to the diaphragm
name the main 4 ligaments of the liver?
coronary, falciform, ligamentum teres (round ligament), left triangular ligament
contents of the portal triad?
portal vein (branch), hepatic artery (branch) and bile duct
all enter the liver via porta hepatis
bile is made in the ___ and stored in the ___?
bile is made in the liver and stored in the gall bladder
why does liver pain present as shoulder tip pain?
referred pain! liver inflammation can irritate the overlaying diaphragm (C3,4,5) and present as right shoulder tip pain (supraclavicular nerve C3, 4)
where in the abdomen in the liver located?
RUQ
where does the coeliac trunk branch from the aorta and what are its three branches?
T12
left gastric, splenic and common hepatic arteries
which vessel supplies most of the arterial blood to the liver?
hepatic portal vein (80%) from gastruduodenal ligament in the lesser omentum.
which arteries anastamose on the greater curvature of the stomach to form the gastro-omental artery?
left gastric and gastroduodenal
at which vertebral level does the coeliac trunk branch off the descending aorta?
T12
the coeliac artery supplies the ___gut organs. name these?
oesophagus, stomach to the first half of the duodenum, half of the pancreas, the gall bladder and liver.
visceral afferents enter at T6-T8
the SMA supplies organs of the ___gut. name these?
where does SMA branch off the abdominal aorta?
branches off aorta at: L1-L2
1/2 of duodenum, 1/2, of pancreas, small intestine to the proximal 2/3rds of the transverse colon
visceral afferents enter at T9-12
the IMA supplies organs of the ___gut. name these organs?
where does it branch off aorta?
branches off aorta at: L3
distal 1/3rd of transverse colon to the anal canal
visceral afferents enter at T12-L2
draw the hepatic triangle of calot
inferior border of liver
cystic duct
common hepatic duct
cystic artery in the middle
name the blood supply to the gall bladder?
cystic artery - a branch from the right hepatic artery
bile is released into the duodenum via the ____?
spinchter of oddi relaxes and allowed digestive juices to flow to the duodenum via the ampulla of vatar
what are the two potential spaces in the greater sac of the peritoneal cavity?
- hepatorenal recess (morrisons pouch): lowest part of the peritoneal cavity when patient in supine
- subphrenic recess: between diaphragm and superior border of the liver
what vertebral level does the thoracic aorta become the abdominal aorta?
diaphragmatic level
T12-L4
what vertebral level does the the abdominal aorta bifurcate into the common iliacs?
L4
