Blood vessels anatomy and physiology

What is the largest blood vessel in the body?

Which type of blood vessel carries oxygenated blood away from the heart?

Which blood vessel has the thinnest walls?

Which blood vessel carries deoxygenated blood back to the heart?

Which blood vessel has valves to prevent backflow of blood?

Which layer of blood vessels is responsible for vasoconstriction and vasodilation?

Which type of blood vessel has the thickest walls?

Which blood vessel connects arterioles and venules?

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

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