Veins take the waste products to the proper eliminatory organs, like the kidneys and liver, and return the blood to the heart where it is sent to the lungs for the oxygen / carbon dioxide exchange.
(Veins; take; the waste products; to the proper eliminatory organs) (Veins; return; the blood) (it; is sent; to the lungs; for the oxygen / carbon dioxide exchange; L:the heart)
Veins Veins it
take return is sent
the waste products to the proper eliminatory organs
the blood
to the lungs for the oxygen / carbon dioxide exchange L:the heart