Name the blood vessels that contain valves. Why are these valves present?
Answers
Answered by
0
Veins
Explanation:
Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
Similar questions