Anatomy and Physiology Cardiovascular System 2

Question 1

Which type of blood vessel has the thickest walls and is designed to withstand the highest pressures?

Accepted Answer

Arteries

Answer

Capillaries

Answer

Veins

Answer

Venules

Question 2

What is the primary function of capillaries?

Accepted Answer

Exchange gases, nutrients, and waste products with tissues

Answer

Return blood to the heart

Answer

Transport blood away from the heart at high pressure

Answer

Regulate systemic blood pressure

Question 3

Which vessel carries oxygenated blood from the lungs back to the heart?

Accepted Answer

Pulmonary vein

Answer

Pulmonary artery

Answer

Aorta

Answer

Superior vena cava

Question 4

Systolic blood pressure represents:

Accepted Answer

The pressure in arteries when the ventricles are contracting

Answer

The pressure in arteries when the heart is relaxing between beats

Answer

The pressure in veins during heart contraction

Answer

The average arterial pressure throughout the entire cardiac cycle

Question 5

The aorta is classified as the largest:

Accepted Answer

Artery in the body

Answer

Vein in the body

Answer

Capillary bed in the body

Answer

Lymphatic vessel in the body

Question 6

Which layer of an arterial wall contains smooth muscle that controls vessel diameter?

Accepted Answer

Tunica media

Answer

Tunica intima

Answer

Tunica externa

Answer

Endothelium

Question 7

Vasoconstriction refers to:

Accepted Answer

Narrowing of blood vessel lumens

Answer

Widening of blood vessel lumens

Answer

Formation of new blood vessels (angiogenesis)

Answer

Rupture of a blood vessel wall