What 4 job do capillary hold? worth 10 points:)?

1:prevent the backflow of blood
2:distribute heat
3:deed as a carrier of oxygenated blood
4:as a haulier for blood electrolyte
i dont know about 4, but I know they allow the ratification of oxygen/co2 and other metobolic resources required by the body at the molecular level :)
1.The exchange of oxygen and carbon dioxide take place through the thin capillary wall.
2.The capillary pass their waste-rich blood to the vein for transport back to the heart.
3.Capillaries are also involved contained by the body's release of excess heat.
4.The arteries go past their oxygen-rich blood to the capillaries which allow the exchange of gas within the tissue.

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