The presence if which of the following prevents coagulation of blood inside the human body:
A) Fibrin
B) Haemoglobin
C) Heparin
D) Thromboplastin
B) Haemoglobin
C) Heparin
D) Thromboplastin
Details:
The blood does not clot inside the body because of the presence of heparin in the blood.