Endothelium-derived relaxing factor has the ability to relax smooth muscle, dilate blood vessels, and:
A) Increase oxygen affinity
B) Decrease oxygenation of tissues
C) Inhibit of platelet aggregation
D) Decrease formation of methemoglobin

Question

Quizplus · Accepted Answer

Endothelium-derived relaxing factor (EDRF) also known as nitric oxide (NO) is important in inhibiting platelet aggregation, thus preventing the formation of blood clots. However, EDRF does not have any direct effect on oxygen affinity or methemoglobin formation.

Endothelium-Derived Relaxing Factor Has the Ability to Relax Smooth Muscle