Match the components of blood in Column-I with their functions in Column-II:
Column-I
(Component)
Column-II
(Function)
A. Platelets P. Transport oxygen and carbon dioxide
B. White Blood Cells Q. Transport nutrients and hormones
C. Red Blood Cells R. Defence and immunity
D. Plasma S. Blood clotting
Options:
1. A-S, B-R, C-P, D-Q
2. A-Q, B-S, C-R, D-P
3. A-R, B-Q, C-S, D-P
4. A-P, B-Q, C-S, D-R

Subtopic:  Blood: General Description & RBC |
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Level 1: 80%+
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Which of the following explains why veins have valves?
1. To reduce the pressure in venous blood.
2. To maintain the oxygen concentration in venous blood.
3. To regulate the blood entering capillaries.
4. To prevent backflow of blood due to low pressure.
Subtopic:  Human Heart: Cardiac Cycle |
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What is the function of thrombokinase in blood clotting?
1. Thrombokinase directly converts fibrinogen into fibrin, which forms a clot.
2. Thrombokinase is an enzyme complex that converts prothrombin into thrombin, which subsequently converts fibrinogen into fibrin.
3. Thrombokinase prevents clot formation by inhibiting thrombin activity.
4. Thrombokinase dissolves clots by breaking down fibrin into smaller fragments.
Subtopic:  Blood: Blood Clotting |
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Level 1: 80%+
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Consider the given two statements:
Statement I: Blood in the pulmonary vein is oxygenated.
Statement II: Blood in the pulmonary artery is deoxygenated.
 
1. Statement I is correct; Statement II is correct.
2. Statement I is correct; Statement II is incorrect.
3. Statement I is incorrect; Statement II is correct.
4. Statement I is incorrect; Statement II is incorrect.
Subtopic:  Human Heart: Double Circulation |
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Level 1: 80%+
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What is the function of the coronary arteries?
1. Supply oxygenated blood to the lungs
2. Deliver deoxygenated blood to the liver
3. Transport hormones to the heart
4. Supply oxygenated blood to the heart muscle
Subtopic:  Human Heart: Double Circulation |
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Level 1: 80%+
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Which chambers of the heart pump oxygenated blood?
1. The right and left atria
2. The right and left ventricles
3. The right atria and the left ventricle
4. The left atria and the left ventricle
Subtopic:  Circulatory Pathways |
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Level 1: 80%+
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Erythroblastosis foetalis occurs when an Rh-negative mother carries an Rh-positive foetus. What happens if this condition is left untreated in a subsequent pregnancy?
1. The foetus may suffer from severe anaemia and jaundice due to maternal Rh antibodies attacking fetal RBCs.
2. The mother’s immune system remains unresponsive to Rh-positive RBCs in subsequent pregnancies.
3. The foetus develops an overproduction of RBCs to counteract maternal antibodies.
4. The condition only affects the first pregnancy, with no impact on later pregnancies.
Subtopic:  Blood: Blood Clotting |
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Level 1: 80%+
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Which of the following rows is correct?
Oxygenated Blood  Deoxygenated Blood
1. Left atrium  Left ventricle  Right atrium  Right ventricle 
2. Left atrium  Right atrium Left ventricle  Right ventricle 
3. Left atrium Right ventricle  Right atrium  Right ventricle 
4. Right atrium  Right ventricle  Left atrium  Left ventricle 
5. Left ventricle Right atrium Left atrium Right ventricle
Subtopic:  Human Heart: Double Circulation |
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Level 1: 80%+
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Identify the incorrect statement:
1. Neutrophils are the most abundant cells (60-65 per cent) of the total WBCs and basophils are the least (0.5-1 per cent) among them.
2. Neutrophils and monocytes (6-8 per cent) are phagocytic cells which destroy foreign organisms entering the body.
3. Basophils secrete histamine, serotonin, heparin, etc., and are involved in inflammatory reactions.
4. Lymphocytes (2-3 per cent) resist infections and are also associated with allergic reactions.
Subtopic:  Blood: White Blood Cells |
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Heart failure is different from cardiac arrest because:
1. Heart failure refers to the heart’s inability to pump sufficient blood, while cardiac arrest is when the heart stops beating entirely.
2. Heart failure only affects the ventricles, whereas cardiac arrest affects the atria.
3. Heart failure is reversible, while cardiac arrest is not.
4. Cardiac arrest is caused by hypertension, while heart failure is caused by valve malfunction.
Subtopic:   DISORDERS OF CIRCULATORY SYSTEM |
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