Mark the pair of substances among the following which is essential for coagulation of blood:
Text Solution
Verified by Experts(i) At the site of an injury, the blood platelets disintegrate and release a protein called platelet factor 3 ; (ii) Injured tissues also release a lipoprotein factor called thromboplastin; (iii)These two factors combine with calcium ions and certain proteins of the blood plasma to form an enzyme called pro; (iv)Prothrombiminase catalyzes prothrombin into active protein called thrombin; (v) Thrombin further converts inactive fibrinogens into fibrin in the blood plasma
Certain factors released by the tissues at the site of injury can initiate coagulation process. Calcium ions and platelet factor act in the first step of coagulation, which is as follows:
(i) At the site of an injury, the blood platelets disintegrate and release a protein called platelet factor 3 (platelet thromboplastin)
(ii) Injured tissues also release a lipoprotein factor called thromboplastin.
(iii)These two factors combine with calcium 
ions and certain proteins of the blood plasma to form an enzyme called pro-thrombinase.
(iv)Prothrombiminase catalyzes prothrombin into active protein called thrombin.
(v) Thrombin further converts inactive fibrinogens into fibrin in the blood plasma.
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