BIOD 331 4.4 Principles of Blood Flow Questions with Correct Answers
Circulatory System A closed system divided into low-pressure pulmonary circulation and
high-pressure systemic circulation.
Hemodynamics Principles that regulate blood flow in the circulatory system.
Blood Flow Represented by cardiac output in the cardiovascular system.
Resistance Opposition to flow caused by friction between moving blood and stationary
vessel wall.
Peripheral Vascular Resistance (PVR) Collective resistance of all vessels in peripheral
circulation.
Viscosity Resistance to flow due to fluid thickness and friction of molecules.
Hematocrit Proportion of RBCs in blood, with a normal range of 40-45% in adult males.
Compliance Total quantity of blood that can be stored per mm Hg rise in pressure.
Veins Most compliant vessels that can store large amounts of blood.
Wall Tension Force in vessel wall opposing distending pressure inside the vessel.
Systolic Pressure Pressure at the height of the pulse during left ventricular contraction.
Diastolic Pressure Lowest pressure during ventricular relaxation and blood filling.
Circulatory System A closed system divided into low-pressure pulmonary circulation and
high-pressure systemic circulation.
Hemodynamics Principles that regulate blood flow in the circulatory system.
Blood Flow Represented by cardiac output in the cardiovascular system.
Resistance Opposition to flow caused by friction between moving blood and stationary
vessel wall.
Peripheral Vascular Resistance (PVR) Collective resistance of all vessels in peripheral
circulation.
Viscosity Resistance to flow due to fluid thickness and friction of molecules.
Hematocrit Proportion of RBCs in blood, with a normal range of 40-45% in adult males.
Compliance Total quantity of blood that can be stored per mm Hg rise in pressure.
Veins Most compliant vessels that can store large amounts of blood.
Wall Tension Force in vessel wall opposing distending pressure inside the vessel.
Systolic Pressure Pressure at the height of the pulse during left ventricular contraction.
Diastolic Pressure Lowest pressure during ventricular relaxation and blood filling.
