The blood does not clot inside the body because of
oxygenation of blood
movement of blood
heparin in blood
absence of fibrinogen in blood
C.
heparin in blood
The blood does not clot inside the body because of heparin in blood. Heparin is a highly sulfated glycosaminoglycan. It is widely used as an injectable anticoagulant and has the highest negative charge density of any known biological molecule.