Liver Function Anatomy

Play an AI-generated podcast conversation about this lesson

What is the approximate weight of the liver in a healthy adult?

2-2.5 kg

1.2-1.5 kg (correct)

0.5-1.0 kg

3-3.5 kg

Which lobe of the liver is approximately 6 times larger than the other?

Right lobe (correct)

Left lobe

They are of equal size

The liver has more than two lobes

What is the main function of Kupffer cells in the liver?

Supply oxygen rich blood from the heart

Produce bile for excretion

Responsible for regenerative properties of the liver

Act as active phagocytes capable of engulfing bacteria, debris, and toxins (correct)

What are the components of a portal triad in the liver?

Hepatic artery, Portal vein, Bile duct Signup and view all the answers

What percentage of the total blood supply of the liver comes from the hepatic artery?

25% Signup and view all the answers

What are the two major cell types of the liver?

Hepatocytes and Kupffer cells Signup and view all the answers

Which enzyme is responsible for the conversion of cholesterol into bile acids in the liver?

Cholesterol 7α-hydroxylase Signup and view all the answers

What is the primary function of the urea cycle in the liver?

To convert ammonia to urea Signup and view all the answers

Which molecule is stored in the liver as ferritin?

Iron Signup and view all the answers

What is the approximate daily production of bilirubin in a healthy adult?

$150-250$ mg Signup and view all the answers

What is the main function of bile salts in the liver?

Emulsification of fats Signup and view all the answers

Which type of bilirubin is water-soluble and reacts slowly?

Conjugated bilirubin Signup and view all the answers

The liver is approximately 1.2-1.5 kg in a healthy adult, divided into 2 lobes: 1. Right (6 times larger) and 2. left, unequally divided by the ______ ligament

falciform Signup and view all the answers

The portal vein supplies nutrient-rich blood from the digestive tract, responsible for 75% of the total blood supply of the liver. The hepatic artery supplies oxygen-rich blood from the heart, responsible for 25% of the total blood supply of the ______

liver Signup and view all the answers

Hepatocytes are large cells that make up approximately 80% of the volume of the organ, performing the major functions associated with the liver and are responsible for the ______ properties of the liver

regenerative Signup and view all the answers

Kupffer cells line the sinusoids of the liver and act as active phagocytes capable of engulfing bacteria, debris, toxins, and other substances flowing through ______

sinusoids Signup and view all the answers

Functional units of the liver responsible for all the metabolic and excretory functions of the liver are called ______

lobules Signup and view all the answers

Portal triads consist of: Hepatic artery, Portal vein, and ______

Bile duct Signup and view all the answers

Bilirubin conjugates two glucoronic chains to unconjugated bilirubin rendering it water-soluble for elimination in the ______ and urine

bile Signup and view all the answers

Bile is composed of bile acids or salts, pigments, and ______

cholesterol Signup and view all the answers

Liver converts fatty acids into acetyl-CoA which is then converted into ketone bodies and ______

cholesterol Signup and view all the answers

Liver serves as a gatekeeper between substances absorbed from the intestinal tract through the portal vein (first pass effect) and those released into the systemic circulation. First pass effect allows essential materials to enter the systemic circulation while preventing the entry of toxic and harmful substances. Detoxification of ammonia into urea through the urea cycle since excess ammonia is toxic to the brain (encephalopathies) Of the detoxification functions of the liver, drug metabolizing system is the most important ✓ Drugs may be detoxified through oxidation, reduction, hydrolysis, hydroxylation, carboxylation, and ______

demethylation Signup and view all the answers

The liver is the storage site for: ✓ Vitamin A, D, and ______

B12 Signup and view all the answers

Approximately 250-350 mg of bilirubin is produced daily in a healthy adult, about 85% of which is derived from turnover of senescent red blood cells. Major metabolite of heme, the iron-binding tetrapyrrole ring in: ✓ Hemoglobin ✓ Myoglobin ✓ Cytochrome ✓ ______

Catalases Signup and view all the answers

Unconjugated bilirubin is water insoluble, non-polar bilirubin, and slow reacting. Prehepatic bilirubin causes of Unconjugated Hyperbilirubinemia: Hemolysis Gilbert’s syndrome Crigler-Najjar syndrome Hepatic diseases Fasting ______

Lucey-Driscoll Signup and view all the answers

Hepatocellular dise ______

ases Signup and view all the answers

Liver is the storage site for: ✓ Vitamin A, D and B12 ✓ Iron (Ferritin) ✓ Water-soluble vitamins ✓ ______

Glycogen Signup and view all the answers

Bilirubin is the principal pigment in bile. Approximately 250-350 mg of bilirubin is produced daily in a healthy adult, about 85% of which is derived from turnover of senescent red blood cells. Major metabolite of heme, the iron-binding tetrapyrrole ring in: ✓ Hemoglobin ✓ Myoglobin ✓ Cytochrome ✓ ______