Which term describes the widening of venous vessels?

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Study the AQA A Level PE Test for The Cardiovascular System. Prepare with flashcards and multiple choice questions, each with explanations. Get ready for exam success!

Multiple Choice

Which term describes the widening of venous vessels?

Explanation:
Widening of venous vessels is venodilate (venodilation). Veins are capacitance vessels, and when their smooth muscle relaxes, the diameter increases. This specific widening of veins—but not arteries—is captured by the term venodilate. General vasodilation describes widening of vessels overall (often referring to arteries), while venoconstrict and vasoconstrict describe narrowing of veins and vessels, respectively. So venodilate is the precise term for veins expanding their diameter.

Widening of venous vessels is venodilate (venodilation). Veins are capacitance vessels, and when their smooth muscle relaxes, the diameter increases. This specific widening of veins—but not arteries—is captured by the term venodilate. General vasodilation describes widening of vessels overall (often referring to arteries), while venoconstrict and vasoconstrict describe narrowing of veins and vessels, respectively. So venodilate is the precise term for veins expanding their diameter.

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