Question

Write the missing words 'a' and 'b'
Injured tissue → a →Prothrombin→
Platelets→ Thrombin b → Clot

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Answer 1

Answer:

prothrombin, glycoprotein (carbohydrate-protein compound) occurring in blood plasma and an essential component of the blood-clotting mechanism. Prothrombin is transformed into thrombin by a clotting factor known as factor X or prothrombinase; thrombin then acts to transform fibrinogen, also present in plasma, into fibrin, which, in combination with platelets from the blood, forms a clot (a process called coagulation). Under normal circumstances, prothrombin is changed into thrombin only when injury occurs to the tissues or circulatory system or both; therefore, fibrin and blood clots are not formed except in response to bleading

Explanation:

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