Hollieclark2013id
Hollieclark2013id
Biology
Answered
Why don't arteries need valves
Sagot :
Lawrenceciliaid
Lawrenceciliaid
Arteries don't need valves because the blood that is flowing through them is at a high pressure.
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Trickiwooid
Trickiwooid
the blood is always flowing through them at high pressures
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