Question

how much do you know about your heart? find out by taking this quiz
quiz: heart & circulatory system
q.10 these are tubes that carry blood back to the heart:
a) arteries
b) veins
c) pipes
d) tubas

Explanation:

Arteries carry blood away from the heart. Veins carry blood back to the heart. Pipes and tubes are not biological terms for blood - carrying vessels in the circulatory system.

Answer:

B. Veins