Liver Function Anatomy
28 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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?

    <p>Hepatic artery, Portal vein, Bile duct</p> Signup and view all the answers

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

    <p>25%</p> Signup and view all the answers

    What are the two major cell types of the liver?

    <p>Hepatocytes and Kupffer cells</p> Signup and view all the answers

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

    <p>Cholesterol 7α-hydroxylase</p> Signup and view all the answers

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

    <p>To convert ammonia to urea</p> Signup and view all the answers

    Which molecule is stored in the liver as ferritin?

    <p>Iron</p> Signup and view all the answers

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

    <p>$150-250$ mg</p> Signup and view all the answers

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

    <p>Emulsification of fats</p> Signup and view all the answers

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

    <p>Conjugated bilirubin</p> 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

    <p>falciform</p> 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 ______

    <p>liver</p> 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

    <p>regenerative</p> 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 ______

    <p>sinusoids</p> Signup and view all the answers

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

    <p>lobules</p> Signup and view all the answers

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

    <p>Bile duct</p> Signup and view all the answers

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

    <p>bile</p> Signup and view all the answers

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

    <p>cholesterol</p> Signup and view all the answers

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

    <p>cholesterol</p> 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 ______

    <p>demethylation</p> Signup and view all the answers

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

    <p>B12</p> 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 ✓ ______

    <p>Catalases</p> 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 ______

    <p>Lucey-Driscoll</p> Signup and view all the answers

    Hepatocellular dise ______

    <p>ases</p> Signup and view all the answers

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

    <p>Glycogen</p> 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 ✓ ______

    <p>Catalases</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser