What ligament divides the liver into two lobes?
Falciform ligament
What is the functional unit of the liver?
Lobule
Which blood vessel supplies oxygen-rich blood to the liver?
Hepatic artery
What vessel supplies nutrient-rich blood from the GI tract to the liver?
Portal vein
Which liver cells perform major liver functions?
Hepatocytes
What macrophages are found in the liver?
Kupffer cells
What enzyme converts heme to biliverdin?
Heme oxidase
What converts biliverdin to unconjugated bilirubin?
Biliverdin reductase
Which protein does unconjugated bilirubin bind to in the blood?
Albumin
What enzyme converts unconjugated bilirubin to conjugated bilirubin?
UDPGT (uridine diphosphate glucoronosyl transferase)
What is the water-soluble form of bilirubin?
Conjugated bilirubin
What substance is conjugated bilirubin converted to in the intestine?
Urobilinogen
What is the brown pigment found in feces?
Stercobilin
What is another term for unconjugated bilirubin?
B1
What is another term for conjugated bilirubin?
B2
What is the process of storing glucose as glycogen?
Glycogenesis
What is the breakdown of glycogen to glucose called?
Glycogenolysis
What is the synthesis of glucose from non-sugar substances?
Gluconeogenesis
What condition causes yellow discoloration due to elevated bilirubin?
Jaundice
What is pre-hepatic jaundice caused by?
Problems prior to liver metabolism
What causes hepatic jaundice?
Liver function impairment
What causes post-hepatic jaundice?
Biliary obstruction
What genetic syndrome results in impaired bilirubin uptake in hepatocytes?
Gilbert's syndrome
What syndrome involves impaired conjugation due to absence of UDPGT?
Crigler-Najjar syndrome
What syndrome is characterized by failure to excrete conjugated bilirubin into bile?
Dubin-Johnson syndrome
What condition in infants is caused by the absence of UDPGT?
Physiologic jaundice of the newborn
What severe neurological condition is caused by B1 build-up in newborns?
Kernicterus
What condition involves scar tissue replacing healthy liver tissue?
Cirrhosis
What is the most common cause of cirrhosis?
Chronic alcoholism
What is the most common malignant tumor in the liver?
Hepatocellular carcinoma (HCC)
What does the albumin test measure?
Albumin/Total Protein
What is assessed by measuring liver enzymes?
Liver function and damage
What does Prothrombin Time assess?
Synthesis function of the liver
What is measured for detoxification of the liver?
Ammonia
What is the preferred specimen for bilirubin testing?
Serum/Plasma
What principle is used in bilirubin testing methods?
Van den Berg reaction
What accelerator is used in the Malloy-Evelyn method?
50% methanol
What accelerates the Jendrassik and Grof method?
caffeine sodium benzoate or caffeine-benzoate acetate
What disease is associated with children using aspirin?
Reye's Syndrome
What type of jaundice is also called unconjugated hyperbilirubinemia?
Pre-hepatic Jaundice
The liver is capable of what?
regenerating cells
The right lobe of the liver is approximately how many times larger than the left lobe?
6
Approximately how many mL of blood pass through the liver per minute?
1,500
The liver is the storage site for all what kinds of vitamins?
fat-soluble and water-soluble
Noticeable jaundice occurs at bilirubin levels of?
3.0-5.0 mg/dL
In Gilbert's syndrome, which gene has a mutation?
UGT1A1
What is deficient in Dubin-Johnson syndrome?
canalicular multidrug resistance/multispecific organic anionic transporter (MDR2/cMOAT)
Alcohol-induced liver injury has how many stages?
3
What indicates clay-colored stool?
B2 (conjugated bilirubin) does not reach the intestine
Metastatic tumors in the liver are how common compared to primary tumors?
more common
What enzyme converts unconjugated bilirubin to conjugated bilirubin?
UDPGT (uridine diphosphate glucoronosyl transferase)
What syndrome is characterized by failure to excrete conjugated bilirubin into bile?
Dubin-Johnson syndrome
What accelerates the Jendrassik and Grof method?
caffeine sodium benzoate or caffeine-benzoate acetate
What is deficient in Dubin-Johnson syndrome?
canalicular multidrug resistance/multispecific organic anionic transporter (MDR2/cMOAT)
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