I: | Red blood cells in humans have a nucleus. |
II: | Blood plasma contains fibrinogen which helps in clotting. |
Component (List I) | Function (List II) | ||
A. | Plasma | 1. | Transport of oxygen and carbon dioxide |
B. | Red Blood Cells (RBCs) | 2. | Clot formation |
C. | White Blood Cells (WBCs) | 3. | Regulation of blood volume and pressure |
D. | Platelets | 4. | Defense against pathogens |
Assertion(A): | Blood flows through the human heart in a single, continuous circuit. |
Reason(R): | The human heart has four chambers - two auricles and two ventricles. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion(A): | Individuals with type AB blood are universal recipients for blood transfusions. |
Reason(R): | They possess neither A nor B antigens on their red blood cells. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion (A): | The parasympathetic nervous system increases cardiac output. |
Reason (R): | The parasympathetic nervous system increases the heart rate and the strength of the heartbeat. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is False, (R) is False. |
4. | (A) is False, (R) is True. |
1. | The atrioventricular valves open during systole |
2. | The ventricles contract during diastole |
3. | The semilunar valves open during ventricular systole |
4. | Atrial systole occurs simultaneously with ventricular systole |
1. | Anti-A and anti-B antibodies are present in the plasma |
2. | The absence of A and B antigens on the red cells |
3. | The presence of both A and B antigens on the red cells |
4. | The presence of anti-A and anti-B antigens on the red cells |