Competency Biomedical Technical Training: Blood Vessels

What is the primary function of arteries?

• To filter blood

• To connect arteries and veins

• To transport oxygenated blood to the body

• To carry blood toward the heart

Which layer of an artery is primarily composed of smooth muscle?

• Tunica externa

• Tunica intima

• Tunica media

• Endothelium

What percentage of total blood volume is typically found in systemic arteries?

• 10%

• 70%

• 50%

• 30%

What is the main role of capillaries in the circulatory system?

• To store blood

• To transport oxygenated blood

• To connect arteries and veins

• To carry blood away from the heart

Which type of blood vessel has the thinnest walls?

• Veins

• Arteries

• Capillaries

• Aorta

What happens to blood flow as the cross-sectional area of blood vessels increases?

• It increases

• It decreases

• It remains the same

• It becomes turbulent

What is the primary function of the pulmonary circuit?

• To supply oxygen to body tissues

• To return deoxygenated blood to the heart

• To regulate blood pressure

• To transport blood from the heart to the lungs

Which blood vessels carry oxygen-poor blood from the right ventricle to the lungs?

• Systemic arteries

• Pulmonary arteries

• Systemic veins

• Pulmonary veins

What is the main reason varicose veins occur?

• High blood pressure

• Excessive exercise

• Weak vein walls

• Low oxygen levels

What is the relationship between blood flow and pressure?

• Blood flows from high to low pressure

• Blood flows from low to high pressure

• Blood flow increases with pressure

• Blood flow is independent of pressure