week 4: Liver Flashcards
Couinaud’s segment 1
caudate lobe
Couinaud’s segment 2
Left superior lateral
Couinaud’s segment 3
Left inferior lateral
Couinaud’s segment 4a
left superior medial
Couinaud’s segment 4b
left inferior medial
Couinaud’s segment 5
right inferior anterior
Couinaud’s segment 6
right inferior posterior
Couinaud’s segment 7
right superior posterior
Couinaud’s segment 8
right superior anterior
segment 5 and 6 are ___ to the transverse plane
caudal
segment 7 and 8 are ___ to the transverse plane
cephalad
Liver main functions
digestion, storage, metabolism, detox, defence,
where are RBC broken down after 120 days
spleen
the breakdown product of hemoglobin that is detoxified in the liver
bilirubin
bilirubin attaches to ___ in the blood and is transported to the liver
albumin
what is most readily affected when hepatocytes are damaged
excretion of bilirubin
excretory product of the liver
bile
principles components of bile
bile salts, water, bile pigments (bilirubin)
primary function of bile
- emulsify intestine fats
- remove waste products excreted by liver
normal size of liver (right lobe)
13-17 cm
15.5cm*
where is measurement of liver taken
mid-clavicular
*from mid-diaphragm to inferior edge
increase in albumin causes
hemolytic anemia
decrease in albumin causes
liver damage
increase in bilirubin causes
- jaundice
- liver damage
- obstruction
increase in alkaline phosphatase causes
- metastases
- obstruction
- lesions
- jaundice
what can indicate hepatitis
increased AST & ALT
increase in beta globulin causes
fatty liver
decrease in ___ & ___ causes carcinoma
- beta globulin
- LDH
2 surfaces of the liver
- anterior / parietal
2. posterior / visceral
Right Posterior surface is inferior to
diaphragm, upper abdominal wall, right kidney, right adrenal gland
what landmarks split up the liver into different sections
- vasculature
- fissures
- ligaments
what are the main fissures
- main lobar
- left intersegmental
- -falciform
- -ligamentum teres - right intersegmental
what liver vessels lie within the fissures
- LHV
- MHV
- RHV
fissure that divides the right and left hepatic lobes, contains MHV, echogenic line from RPV to GB neck
main lobar fissure