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 (C)</p> Signup and view all the answers

What is the main function of the media in arteries?

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

Where does resistance to blood flow primarily occur?

<p>In the arterioles (D)</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 (C)</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 (C)</p> Signup and view all the answers

What is the diameter of capillaries?

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

Where do small arterioles called the vasa vasorum perfuse?

<p>The media (A)</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 (C)</p> Signup and view all the answers

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

<p>Resistance to blood flow (C)</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 (B)</p> Signup and view all the answers

What forms collateral circulation if a major artery is obstructed?

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

What is the function of the intimal endothelium in arteries?

<p>Regulating immune and inflammatory reactions (B)</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 (C)</p> Signup and view all the answers

Which molecules does intact endothelium in the intima synthesize?

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

Where is the internal elastic membrane located within arteries?

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

Which layer of arteries modulates blood flow and vascular reactivity?

<p>Intima (C)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser