alleryStart learning →Endothelins constricting vessel smooth muscle have what effect on blood pressure?
AIt decreases
BIt is unchanged
CIt reaches zero
DIt increases
Answer & Solution
Correct answer: D. It increases
1. Narrowing a vessel changes the pressure inside it.
2. The endothelium releases local chemicals called endothelins.
3. These constrict the smooth muscle within the walls of the vessel.
4. That constriction has a stated consequence.
5. It acts to increase blood pressure.
_Source: OpenStax Anatomy and Physiology 2e (CC BY 4.0), Ch 20 'The Cardiovascular System: Blood Vessels and Circulation', sections 20.1-20.5_
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