ANATOMY

Detailed explanation-1: -You need to know the factors that affect blood flow through the cardiovascular system: blood pressure, blood volume, resistance, disease and exercise.

Detailed explanation-2: -Numerous factors can alter resistance, but the three most important are vessel length, vessel radius, and blood viscosity. With increasing length, increasing viscosity, and decreasing radius, resistance is increased.

Detailed explanation-3: -The three most important factors affecting resistance are blood viscosity, vessel length and vessel diameter and are each considered below.

Detailed explanation-4: -Cardiac output. Compliance. Volume of the blood. Viscosity of the blood. Blood vessel length and diameter.