Arterial Layers and Endothelium Quiz

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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?

Expose thrombogenic factors in the plaque core Signup and view all the answers

What is the main function of the media in arteries?

To accommodate blood pressure and flow Signup and view all the answers

Where does resistance to blood flow primarily occur?

In the arterioles Signup and view all the answers

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

Branching network of smaller arteries Signup and view all the answers

What is the function of the adventitia in an artery?

To contain nerve fibers and vasa vasorum Signup and view all the answers

What is the diameter of capillaries?

7-8 um Signup and view all the answers

Where are arterial pulses palpable in the arms?

At the bend of the elbow just medial to the biceps tendon Signup and view all the answers

Where do small arterioles called the vasa vasorum perfuse?

The media Signup and view all the answers

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

To accommodate blood pressure and flow Signup and view all the answers

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

Resistance to blood flow Signup and view all the answers

Where are arterial pulses palpable in the arms?

The brachial artery at the bend of the elbow Signup and view all the answers

What forms collateral circulation if a major artery is obstructed?

Anastomoses between smaller arteries Signup and view all the answers

What is the function of the intimal endothelium in arteries?

Regulating immune and inflammatory reactions Signup and view all the answers

What do complex atheromas contain?

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

Arterial Layers and Endothelium Quiz

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Questions and Answers

What is the function of intact endothelium in the intima?

What is the composition of complex atheromas?

What are the functions of the intimal endothelium?

What is the role of inflammatory mediators in plaque rupture?

What is the main function of the media in arteries?

Where does resistance to blood flow primarily occur?

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

What is the function of the adventitia in an artery?

What is the diameter of capillaries?

Where are arterial pulses palpable in the arms?

Where do small arterioles called the vasa vasorum perfuse?

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

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

Where are arterial pulses palpable in the arms?

What forms collateral circulation if a major artery is obstructed?

What is the function of the intimal endothelium in arteries?

What do complex atheromas contain?

Which molecules does intact endothelium in the intima synthesize?

Where is the internal elastic membrane located within arteries?

Which layer of arteries modulates blood flow and vascular reactivity?

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