Q. No.Consider the given statements:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | The opening between the right atrium and the right ventricle is guarded by the tricuspid valve. |
| II: | A bicuspid or mitral valve guards the opening between the left atrium and the left ventricle. |
| III: | The openings of the right and the left ventricles into the pulmonary artery and the aorta respectively are provided with the semilunar valves. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Human Heart: Cardiac Cycle |
93%
From NCERT
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Semilunar valves:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | allow the flow of blood from ventricles to the pulmonary artery or aorta. |
| II: | prevent any backward flow of blood from the pulmonary artery or aorta into the ventricles. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Human Heart: Cardiac Cycle |
85%
From NCERT
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Consider the two statements:
1. Statement I is correct: Statement II is incorrect
2. Statement I is incorrect: Statement II is correct
3. Statement I is correct: Statement II is correct
4. Statement I is incorrect: Statement II is incorrect
| Statement I: | A muscular wall called a septum prevents the mixture of blood between the left and right sides of the heart. |
| Statement II: | The left ventricle has a thicker musculature when compared to the musculature of the right ventricle. |
1. Statement I is correct: Statement II is incorrect
2. Statement I is incorrect: Statement II is correct
3. Statement I is correct: Statement II is correct
4. Statement I is incorrect: Statement II is incorrect
Subtopic: Human Heart: Gross Anatomy | Human Heart: Cardiac Cycle | Circulatory Pathways |
77%
From NCERT
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Identify the correct chronological arrangement of the components of the cardiac conduction nodal tissue:
| 1. | SA node, AV bundle, AV node, Purkinje fibers |
| 2. | SA node, AV node, AV bundle, Purkinje fibers |
| 3. | AV node, AV bundle, SA node, Purkinje fibers |
| 4. | AV node, SA node, Purkinje fibers, AV bundle |
Subtopic: Human Heart: Gross Anatomy | Human Heart: Cardiac Cycle | Rhythmic Excitation of Human Heart: Part 1 | Rhythmic Excitation of Human Heart: Part 2 | Circulatory Pathways |
94%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | If the SA node does not function, or the impulse generated in the SA node is blocked before it travels down the electrical conduction system, the heart would stop. |
| Reason (R): | No other part of the nodal tissue of the heart is capable of generating the impulse. |
In the light of the above statements choose the correct answer from the options given below:
| 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: Human Heart: Cardiac Cycle |
57%
From NCERT
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If the atrioventricular node is damaged:
1. SA node would not develop action potential
2. atria will fail to contract
3. the impulse will not reach AV node
4. the impulse will not reach ventricles
Subtopic: Human Heart: Cardiac Cycle |
69%
From NCERT
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All the following statements regarding joint diastole phase of the cardiac cycle are correct except:
| 1. | All chambers are in a relaxed state |
| 2. | The AV valves may remain closed in the initial period |
| 3. | Ventricles get filled in the later part |
| 4. | Semilunar valves remain open |
Subtopic: Human Heart: Cardiac Cycle |
67%
From NCERT
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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 |
84%
From NCERT
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What percentage of the ventricular filling is passive, which means it is due to simply the opening of atrioventricular valves?
1. 30%
2. 50%
3. 70%
4. 90%
1. 30%
2. 50%
3. 70%
4. 90%
Subtopic: Human Heart: Cardiac Cycle |
63%
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During an ongoing cardiac cycle, the atria of the heart are in systole. Which of the following will also be true?
| 1. | The ventricles are also in systole. |
| 2. | The atrioventricular valves are closed. |
| 3. | Blood is being pumped into the aorta and pulmonary trunk. |
| 4. | Blood is being pumped into the ventricles. |
Subtopic: Human Heart: Cardiac Cycle |
84%
From NCERT
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