Explain the vein or artery that supply blood to heart

1.	Explain the vein or artery that supply blood to heart
Answer» Veins r thin walls vessels and have valves in it. Their walls r thin because the pressure of blood flow in it is low. Artery r thick walled vessel without valves in it. The pressure of blood flow in it high because the blood is pumped from the heart directly taken away through artery to the whole body

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