Blood Vessels

What primarily moves blood away from the heart?

• Veins

• Arteries

• Capillaries

• Venules

What is the proper term for a bruise?

Which layer of blood vessel walls is in direct contact with blood?

• Endothelium

• Tunica media

• Tunica intima

• Tunica externa

What role does the autonomic nervous system play in blood vessel function?

• It manages blood oxygen levels

• It signals the heart to pump

• It regulates blood vessel diameter

• It controls heartbeat

What type of muscle tissue makes up these arteries?

• cardiac

• skeletal

• smooth

• elastic

What is the function of capillaries in the circulatory system?

• To pump blood

• To cool down the body

• To exchange gases and nutrients

• To carry blood back to the heart

How do veins assist in returning blood to the heart?

• Using venous valves

• Through gas exchange

• By expanding

• By contracting