What causes the friction in blood vessels that affects blood pressure?
A) Cardiac output and heart rate
B) Blood viscosity and blood vessel diameter
C) Damaged, broken capillaries and varicose veins
D) Pressure gradients and blood flow

Question

Quizplus · Accepted Answer

Friction in blood vessels is affected by blood viscosity (thickness) and blood vessel diameter. When blood is too thick or vessels are too narrow, more friction occurs, which can lead to increased blood pressure.

What Causes the Friction in Blood Vessels That Affects Blood