Science, asked by ygbhaskar06, 2 months ago

ha state the pa function arteries & veins
Explain why veins have tunvonies while
arteries do not​

Answers

Answered by faiz08032007
1

Answer:

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.

Explanation:

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