Liver A&P Flashcards
is the liver an intraperitoneal or retroperitoneal organ?
intraperitoneal
liver measurement in SAG
13 to 15cm
liver measurement in TRV
21 to 22.5cm
what divides the RLL into anterior and posterior segments?
RHV
RI Fissure
RPV
what divides the LLL into lateral and medial segments?
LHV
LI Fissure
LPV
Lig Teres
Falciform Ligament
the ligamentum teres is the remnant of the
umbilical vein
the ligamentum venosum is the remnant of the _____
ductus venosum
the falciform ligament attaches the liver to the ______
anterior abdomen wall
the coronary ligament attaches the liver to the ______
diaphragm
- caudate lobe
- left lateral superior
- left lateral inferior
4a. left medial superior
4b. left medial inferior - right anterior inferior
- right posterior inferior
- right posterior superior
- right anterior superior
portal vein diameter should be
less than 13mm
portal veins exhibit ________ flow and have _______, ______ walls
hepatopetal flow
thick, echogenic walls
hepatic veins exhibit ________ and _________ flow
hepatofugal and triphasic flow
aspartate aminotransferase (AST)
levels are proportional to the amount of damage and time between cell injury and testing
an increase in AST levels indicates
necrosis
alanine aminotransferase (ALT)
more specific indicator of liver damage
an increase in alkaline phosphatase (ALP) indicates
obstruction
an increase in conjugated (direct) bilirubin indicates
obstruction
a decrease in unconjugated (indirect) bilirubin indicates
hepatocellular disease
an increase in total bilirubin with a decrease in hemoglobin indicates
hemolysis (destruction of RBCs)
what does albumin do?
keeps fluid in the bloodstream
decrease albumin levels indicate
liver or kidney problems
an increase in alpha fetoprotein (AFP) levels indicate
cancerous liver tumors
prothrombin time
determines and measures how long it takes for blood to clot
average PTT is
11 to 13.5 seconds
an increase in PTT indicates
metastasis and hepatitis
a decrease in PTT indicates
extrahepatic duct obstruction
an increase in lactic acid dehydrogenase (LDH) indicates
tissue damage
what are the 7 functions of the liver
- metabolism - carbs, lipids, proteins
- vitamin and mineral storage
- synthesis and secretion of bile
- removal of waste products
- blood reservoir
- lymph production
- detoxification
what transducer is best for a liver ultrasound?
3.0 to 5.0MHz curved
the liver parenchyma should be isoechoic to slightly hyperechoic to the ________
kidneys
the liver parenchyma should be slightly hypoechoic to the ________
spleen
venous drainage of the caudate lobe is via
emissary veins
not seen unless there is pathology
direction of fetal circulation (4)
umbilical vein (Lig Teres)
LPV
ductus venosus (Lig Venosum)
IVC
SGOT is the old term for
AST
SGPT is the old term for
ALT
increased GGT + increased ALP =
biliary obstruction
increased GGT + increased ALT =
hepatocellular disease