Explain how valves help the transport of blood in veins.

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nataliemandisi2005 nataliemandisi2005

04-09-2020
Biology

contestada

Explain how valves help the transport of blood in veins.

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Hey guys, I need 5 sentences!¿Prefieres viajar en coche, en tren, en barco o en avión? ¿Por qué?

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nazz1010 nazz1010 · Answer 1 · 2020-09-04T11:30:50+02:00

nazz1010 nazz1010

04-09-2020

Answer:

The valves' main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood cannot flow back

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