liver classification nomenclature Flashcards
divisions of the liver include (5)
lobes divisions sectors segments subsegments
the right and left hepatic LOBES are divided by oblique imaginary border drawn between the ______and ________. And marks the division of what vessel?
*this vessel division is categorized as what ?
gallbladder and the inferior vena cava
MPV is divided into RPV and LPV at this plane (TRV)
cat. as 1st order division of the PV
AKA for hepatic lobes
hemilivers ( hemi = half )
The hemiliver imaginary border transects what four structures to create the right and left lobes of the liver?
inferior vena cava
middle hepatic vein
gallbladder
bifurcation of the main portal vein to rt and lft branches
second order of division seperates the liver into different _______ or AKA _________
segments /// sectors
right and left lobes are further divided by __________ into ___ separate parts and run in what plane
hepatic veins
4 (segments)
longitudinal
the 4 segments are further divided by the second branching of the
Portal Veins
the 4 sectors are
left lateral
left medial
right anterior
right posterior
left lateral sector contains segments __ &__
II , III
left medial sector contains segments __ & __
IVa , IVb
right anterior sector contains segments __&__
V, VIII
right posterior sector contains segments ___ &___
VI , VII
the caudate lobe is segment ___ and is supplied by _____ and drained by______
I , both right and left portal veins , emissary veins
where do the emissary veins drain
directly into IVC
the caudate lobe is :
_____ to ligamentum venosum
_____ to porta hepatis
_____ &____ to IVC
_____ to the lesser sac of the sto
posterior
posterior
anterior and medial
lateral
hepatic veins divide the liver _______, into ___ parts
longitudinally , 4
the parts divided by the hepatic veins are further divided _______–by a _______ , where the _____divides into _________
transversely, imaginary plane where the MPV divides into the right and left portal vein
segment/ sub segment division: name the subsegment name to the number I II III IVa IVb V VI VII VIII
caudate lobe lft lat superior lft lateral inferior lft medial superior lft medial inferior rt anterior inferior rt posterior inferior rt posterior superior rt anterior superior
when imaging the liver either subcostal or intercostal in the transverse plane and angeling superior what liver segments are visable
VII, VIII, IVa, and II
either subcostal or intercostal imaging in transv plane of the liver and angeling inferior what liver segments are seen
VI, V, IVb, III
