19. The Blood Vessels

Which circuit of the circulatory system contains the aorta and vena cava?

Which vein is the exception and carries oxygenated blood from the lungs back to the heart?

Which blood vessels carry deoxygenated blood away from the heart?

What prevents the backflow of blood in veins?

Which type of blood vessel carries blood back to the heart through a series of one-way valves?

Which blood vessels have valves to prevent the backflow of blood?

Which type of blood vessel typically lacks one or more of the three tunics?

Which are the only arteries in the body that carry deoxygenated blood?

Which blood vessels become progressively smaller and branch as they extend away from the heart?

Which of the following are veins characterized by especially thin walls, large lumens, and a lack of smooth muscle?

Which type of blood vessels hold the greatest volume of blood in the human body?

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

Which of the following best describes vascular tissue?

Compared to veins, arteries have __________.

Which statement best describes arteries?