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Q. No.Consider the given two statements:
Assertion (A):
Double circulation includes the passage of blood through the heart twice during one complete cycle
Reason (R):
Double circulation is seen in birds and mammals.
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.
Both (A) and (R) are False.
Subtopic: Circulatory Pathways |
81%
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The primary difference between an artery and a vein is that:
1. A and B are correct
2. B and C are correct
3. A and C are correct
4. A, B and C are correct
| A: | Arteries carry blood away from the heart, and veins carry blood towards the heart. |
| B: | Veins contain valves, whereas arteries do not. |
| C: | Arteries carry only oxygenated blood, while veins carry only deoxygenated blood. |
1. A and B are correct
2. B and C are correct
3. A and C are correct
4. A, B and C are correct
Subtopic: Human Heart: Double Circulation |
77%
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Which of the following statements accurately describes the regulation of cardiac activity by the autonomic nervous system?
| 1. | The sympathetic nervous system decreases heart rate and force of contraction. |
| 2. | The parasympathetic nervous system increases heart rate and decreases force of contraction. |
| 3. | The sympathetic nervous system increases heart rate and force of contraction. |
| 4. | The parasympathetic nervous system increases both heart rate and force of contraction. |
Subtopic: Regulation of Cardiac Activity |
87%
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In the ABO blood group system, the blood type AB means:
| 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 |
Subtopic: Blood: Blood Group (A,B,O) |
88%
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During the cardiac cycle:
| 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 |
Subtopic: Human Heart: Cardiac Cycle |
83%
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The clotting of blood is an important function attributed in human blood to:
1. Erythrocytes
2. Leukocytes
3. Thrombocytes
4. Neutrophils
1. Erythrocytes
2. Leukocytes
3. Thrombocytes
4. Neutrophils
Subtopic: Blood: Blood Clotting |
98%
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Consider the given two statements:
| 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. |
Subtopic: Regulation of Cardiac Activity |
75%
From NCERT
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Consider the following statements about human blood:
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statements are correct.
4. Neither Statement is correct.
| I: | Red blood cells in humans have a nucleus. |
| II: | Blood plasma contains fibrinogen which helps in clotting. |
2. Only Statement II is correct.
3. Both Statements are correct.
4. Neither Statement is correct.
Subtopic: Blood: General Description & RBC |
92%
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The main consequence of a blockage in the coronary artery is most likely to be:
1. Reduced oxygen supply to the brain.
2. Increased blood pressure.
3. Myocardial infarction (heart attack).
4. Decrease in venous return.
1. Reduced oxygen supply to the brain.
2. Increased blood pressure.
3. Myocardial infarction (heart attack).
4. Decrease in venous return.
Subtopic: DISORDERS OF CIRCULATORY SYSTEM |
79%
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What does the 'P' wave in an ECG represent?
1. Ventricular depolarization
2. Atrial repolarization
3. Ventricular repolarization
4. Atrial depolarization
1. Ventricular depolarization
2. Atrial repolarization
3. Ventricular repolarization
4. Atrial depolarization
Subtopic: ECG & Coronary Artery Disease |
91%
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