Blood fails to clot while flowing in the blood vessels because of pres

1.	Blood fails to clot while flowing in the blood vessels because of presence of
Answer» Blood fails' to clot while FLOWING in the 'blood vessel' because of the 'presence' of heparin. EXPLANATION: Heparin is a blood anti-coagulant that is present in the blood to prevent it from clotting and to ALLOW blood to freely FLOW through blood vessels.

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