Blood Vessel Structure and Function

What is the function of elastic arteries (aorta) during ventricular systole?

• Transport blood at low pressure

• Transport blood at high pressure away from the heart

• Reduce blood inflow

• Increase blood inflow

Which type of blood vessel has thick-walled vessels with small diameters?

• Elastic arteries

• Muscular arteries

• Arterioles

• Capillaries

Fill in the blank: Arterioles have a smooth muscle in the tunica media that controls the _______ of the central space of the vessel.

• size

• color

• temperature

• weight

What is the role of pre-capillary sphincters?

• Increase blood inflow

• Reduce blood inflow

• Transport blood at high pressure

• Store blood

Capillaries allow fluids rich in nutrients to pass through their walls. True or False?

• True

• False

What is the function of veins in terms of blood flow?

• A) Transport blood at high pressure

• B) Contract to reduce blood inflow

• C) Blood flows in the veins assisted by the skeletal muscle pump

• D) Increase blood inflow

Fill in the blank: Venae cavae are veins and contain more smooth muscle in the _______ wall.

• middle

• outer

• inner

• upper

What is the primary function of capillaries in the circulatory system?

• Reduce blood inflow

• Store blood

• Exchange nutrients and waste between blood and tissues

• Transport blood at high pressure

Which type of blood vessel is primarily responsible for regulating blood pressure?

• Elastic arteries

• Arterioles

• Capillaries

• Veins

Fill in the blank: The tunica media of blood vessels is primarily composed of _______ muscle.

• cardiac

• smooth

• skeletal

• striated