Health, 07.06.2020 18:57 jakebice4480

Why do veins also have valves? to keep the blood from circulating too fast
to regulate contractions of the heart
to keep the veins from losing blood
to prevent gravity from pulling the blood towards the feet

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Why do veins also have valves? to keep the blood from circulating too fast
to regulate contra...

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More questions: Health Another questions

Why do veins also have valves? to keep the blood from circulating too fast to regulate contractions of the heart to keep the veins from losing blood to prevent gravity from pulling the blood towards the feet

Answers

Another question on Health

Why do veins also have valves? to keep the blood from circulating too fast
to regulate contractions of the heart
to keep the veins from losing blood
to prevent gravity from pulling the blood towards the feet