Cardiovascular System: Blood Vessels Quiz

What are the three major types of blood vessels?

• Arteries, veins, and capillaries

• Arteries, venules, and capillaries

• Arterioles, veins, and capillaries

• Arterioles, venules, and capillaries

Which type of blood vessels carry blood away from the heart?

• Veins

• Arteries

• Capillaries

• Venules

What is the function of the tunica intima in blood vessels?

• Allows passage of fluids and small solutes

• Protects, reinforces, and anchors the vessel to surrounding structures

• Reduces friction between vessel walls and blood

• Controls vasoconstriction and vasodilation

Which type of arteries contain large amounts of elastin and can withstand pressure fluctuations?

• Muscular arteries

• Arterioles

• Elastic arteries

• Capillaries

What is the function of capillaries in the cardiovascular system?

• To distribute blood to specific body organs

• To act as blood reservoirs

• To regulate blood flow into capillary beds

• To allow exchange of substances between blood and interstitial fluid

What is the relative proportion of blood volume contained in veins?

• 65%

• 50%

• 35%

• 20%

What is the primary factor influencing local blood flow in the systemic circulation?

• Blood viscosity

• Blood vessel length

• Blood pressure

• Blood vessel diameter

What is the force per unit area exerted by the blood against a vessel wall?

• Resistance

• Blood pressure

• Blood flow

• Blood volume

What is the mean arterial pressure (MAP) calculated as?

• Systolic pressure minus diastolic pressure

• Diastolic pressure plus pulse pressure

• Pulse pressure divided by diastolic pressure

• One-third of the pulse pressure added to the diastolic pressure

What is the goal of pressure regulation in the cardiovascular system?

• To keep blood pressure as low as possible

• To keep blood pressure high enough to provide adequate tissue perfusion

• To keep blood pressure high enough to prevent blood flow

• To keep blood pressure at a constant level