Arteries and veins are two important parts of the circulatory system. What is the relationship between arteries and veins?
A.
They work together to exchange gases.
B.
They work together to transport nutrients.
C.
They work independently to remove wastes.
D.
They work independently to relay messages.
Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.
