Arterial Layers and Endothelium Quiz
20 Questions
1 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 function of intact endothelium in the intima?

  • Produces proinflammatory molecules
  • Modulates immune and inflammatory reactions
  • Promotes smooth muscle cell proliferation
  • Synthesizes regulators of thrombosis (correct)

    • What is the composition of complex atheromas?

  • Plaque erosion and prothrombotic molecules
  • Necrotic lipid-rich core and fibrous cap of smooth muscle cells (correct)
  • Immune cells and vasoconstrictors
  • Endothelial lining and vascular cells

    • What are the functions of the intimal endothelium?

  • Promotes plaque erosion and cap fibrosis
  • Regulates blood flow and vascular reactivity (correct)
  • Synthesizes vasoconstrictors and adhesion molecules
  • Breaches the external elastic membrane

    • What is the role of inflammatory mediators in plaque rupture?

    <p>Expose thrombogenic factors in the plaque core</p> Signup and view all the answers

    What is the main function of the media in arteries?

    <p>To accommodate blood pressure and flow</p> Signup and view all the answers

    Where does resistance to blood flow primarily occur?

    <p>In the arterioles</p> Signup and view all the answers

    What can increase in size over time to form collateral circulation if a major artery is obstructed?

    <p>Branching network of smaller arteries</p> Signup and view all the answers

    What is the function of the adventitia in an artery?

    <p>To contain nerve fibers and vasa vasorum</p> Signup and view all the answers

    What is the diameter of capillaries?

    <p>7-8 um</p> Signup and view all the answers

    Where are arterial pulses palpable in the arms?

    <p>At the bend of the elbow just medial to the biceps tendon</p> Signup and view all the answers

    Where do small arterioles called the vasa vasorum perfuse?

    <p>The media</p> Signup and view all the answers

    What is the primary role of the smooth muscle cells in the media of arteries?

    <p>To accommodate blood pressure and flow</p> Signup and view all the answers

    What occurs primarily in the arterioles in terms of blood flow?

    <p>Resistance to blood flow</p> Signup and view all the answers

    Where are arterial pulses palpable in the arms?

    <p>The brachial artery at the bend of the elbow</p> Signup and view all the answers

    What forms collateral circulation if a major artery is obstructed?

    <p>Anastomoses between smaller arteries</p> Signup and view all the answers

    What is the function of the intimal endothelium in arteries?

    <p>Regulating immune and inflammatory reactions</p> Signup and view all the answers

    What do complex atheromas contain?

    <p>A fibrous cap of smooth muscle cells and a necrotic lipid-rich core</p> Signup and view all the answers

    Which molecules does intact endothelium in the intima synthesize?

    <p>Nitric oxide and prostacyclin</p> Signup and view all the answers

    Where is the internal elastic membrane located within arteries?

    <p>Bordering the intima and the media</p> Signup and view all the answers

    Which layer of arteries modulates blood flow and vascular reactivity?

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

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser