When vasodilation doubles the vessel diameter, what is the change in resistance?

A) Reduced by half
B) Doubles (twice the original value)
C) Reduced by 1/4th of the original value
D) Reduced to 1/16th of the original value

Vasodilation

The widening of blood vessels, which decreases blood pressure and increases blood flow to specific areas of the body.

Vessel Diameter

The width of a blood vessel, which affects blood flow and pressure, and is regulated by various physiological mechanisms.

Resistance

In a broad sense, it refers to the opposition to flow or movement, such as electrical resistance in physics or the body's resistance to disease in biology.