Medical Quiz

Blood clotting Quiz


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Which of the following is not the importance of blood clotting? Choose your answers.

A. Prevent excessive blood lost

B. Prevent the entry of pathogen into the blood vessels

C. Prevent the dropping of blood pressure.

D. Prevent the entry of oxygen into the blood


Name the chemical substance that is secreted by platelets when it is exposed to the air.

A. Antibody

B. Trombin

C. Thrombokinase

D. Fibrin


What substance is needed to convert fibrinogen to fibrin?

A. Thrombokinase

B. Thrombin

C. Prothrombin

D. Thrombus


Thrombin is an enzyme that converts fibrin to fibrinogen

A. TRUE

B. FALSE


Why fibrin mesh is important in blood clotting mechanism?

A. To attract more platelets.

B. To attract more erythrocytes.

C. To destroy pathogens.

D. To prevent erythrocytes from flowing out.


Thrombokinase together with calcium ion and vitamin K convers P to Q.

A. P: prothrombin Q: thrombin

B. P: thrombin Q: prothrombin

C. P: fibrinogen Q fibrin

D. P: fibrin Q: fibrinogen


A boy accidentally cut his finger. the blood clots occur slowly. What caused the blood to clot slowly?

A. Lack of vitamin D in his meal

B. Lack of vitamin K in his meal

C. The blood of the boy is infected with pathogens

D. The blood of the boy flow with high pressure at the wound


What is the role of fibrin in blood clotting?

A. acts as an enzyme

B. forms a mesh of fibres to cover the wound

C. causes smooth muscles in blood vessels to contract

D. starts off the whole process


Thrombin, in turn, catalyzes the conversion of the soluble protein fibrin to fibrinogen, which serves as a net that traps blood cells

A. TRUE

B. FALSE


A blood clot moving in the bloodstream is called an embolus

A. TRUE

B. FALSE


Ariana lack of clotting factors that cause her blood to unable to clot when she is having a cut.

Name this disease.

A. Haemophilia

B. Talasemia

C. Thrombosis

D. Embolism


Blockage in carotid arteries may lead to a heart attack while blockage in the coronary arteries may lead to stroke

A. TRUE

B. FALSE


Blood clot can be formed within the artery and prevents blood from flowing normally through the circulatory system.

What is this disease.

A. Heamophilia

B. Talasemia

C. Embolism

D. Thrombosis




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