10 Questions
Which layer of tissue borders the intima and the media in arteries?
Internal elastic membrane
What does the intact endothelium in the intima synthesize to regulate thrombosis?
Prostacyclin and plasminogen activator
What is the primary function of the intimal endothelium in regulating blood flow and vascular reactivity?
Synthesizing vasoconstrictors and vasodilators
What is increasingly implicated in plaque rupture and plaque erosion in complex atheromas?
Inflammatory mediators
What is the outer layer of the artery called?
Adventitia
What do the smooth muscle cells in the media of arteries do?
Dilate and constrict to accommodate blood pressure and flow
Where does resistance to blood flow primarily occur?
Arterioles
What is the function of the vasa vasorum?
Perfuse the media
Where are the pulsations in the radial artery located?
On the lateral flexor surface of the arm
What is the size range of small arterioles?
20 to 100 um in diameter
Test your knowledge on the layers of arterial tissue including intima, media, and adventitia, and their specific characteristics such as the internal and external elastic membranes. Understand the metabolic properties of the endothelial cells lining the blood vessels.
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