HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Both assertion and reason are true and reason is correct explanation of assertion.
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Both assertion and reason are true but reason is not correct explanation of assertion.
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Assertion is true but reason is false.
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Assertion is false but reason is true.
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Detailed explanation-1: -Heparin is also known as blood thinner and is responsible for preventing coagulation of blood. Prothrombinase is the coagulation factor that is converted to an enzyme that converts prothrombin to thrombin in a reaction that depends on calcium ions and other coagulation factors thereby helping in coagulation of blood.
Detailed explanation-2: -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).
Detailed explanation-3: -Prothrombin is a protein made by the liver. Prothrombin helps blood to clot. The “prothrombin time” (PT) is one way of measuring how long it takes blood to form a clot, and it is measured in seconds (such as 13.2 seconds). A normal PT indicates that a normal amount of blood-clotting protein is available.
Detailed explanation-4: -Prothrombin activator functions to catalyze the reaction in which prothrombin is converted into thrombin. When a blood vessel is damaged, prothrombin activator is released to help with the blood clotting process.