1) Why is the blood clotting mechanism necessary? a) To increase blood pressure b) To minimize blood loss and prevent bacterial entry c) To dissolve blood clots d) To promote continuous bleeding 2) What activates prothrombin in the blood clotting mechanism? a) Platelets b) Thrombokinase with calcium ions and vitamin K c) Fibrin d) Erythrocytes 3) What is the role of thrombin in the blood clotting process? a) Converts fibrin to fibrinogen b) Triggers platelet aggregation c) Catalyzes the conversion of fibrinogen to fibrin d) Forms erythrocyte networks 4) What is fibrin? a) A type of clotting factor b) An inactive plasma protein c) A soluble enzyme in the blood d) A threadlike protein that traps erythrocytes 5) Which nutrient is essential for the blood clotting process? a) Vitamin A b) Potassium c) Magnesium d) Calcium 6) Haemophilia is a condition characterized by: a) Excessive blood clotting in veins b) Overproduction of platelets c) A hereditary lack of clotting factors d) Increased calcium in the blood 7) What happens during thrombosis? a) Formation of an embolus b) Blood flow stops in damaged blood vessels c) Formation of a blood clot (thrombus) in the blood vessel d) Increased vitamin K production 8) What is an embolus? a) A stationary blood clot b) A blood clot transported by blood flow c) A protein fiber in the blood d) An enzyme that triggers clotting 9) Why should you move your legs after sitting for too long? a) To increase calcium levels b) To prevent the risk of thrombosis c) To increase blood flow to the arms d) To promote erythrocyte production

MECHANISM OF BLOOD CLOTTING

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