Consider the following:
1. Fibrin
2. Thrombin
3. Thromboplastin
4. Calcium ions
Which among the above are required in normal blood clotting?

Answer: [D] 1, 2, 3 & 4

Normal blood clotting requires the following: thromboplastin, thrombin, fibrinogen, fibrin, calcium ions, thrombocytes, and platelets. In addition, other clotting factors are also required

This question is a part of GKToday's Integrated IAS General Studies Module