- 1(current)
Q. No.Consider the given two statements:
| Assertion (A): | Human heart is myogenic. |
| Reason (R): | Human heart is made of cardiac muscle. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Human Heart: Gross Anatomy | Regulation of Cardiac Activity |
63%
From NCERT
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Normal activities of the human heart are regulated:
1. Intrinsically
2. By the autonomic nervous system
3. By the somatic neural system
4. By the adrenal medullary hormones
Subtopic: Regulation of Cardiac Activity |
61%
From NCERT
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Consider the two statements:
| Assertion (A): | The human heart is called as myogenic. |
| Reason (R): | The human heart is made up of cardiac muscles. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Regulation of Cardiac Activity |
70%
From NCERT
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The activities of the human heart can be regulated through the autonomic nervous system by a special neural center located in:
| 1. | Medulla oblongata | 2. | Hypothalamus |
| 3. | Mid brain | 4. | Cerebrum |
Subtopic: Regulation of Cardiac Activity |
80%
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Consider the given two statements:
| Assertion (A) | Neural signals through the sympathetic nerves (part of ANS) can increase the cardiac output. |
| Reason (R): | Neural signals through the sympathetic nerves can increase the rate of heart beat and the strength of ventricular contraction. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Regulation of Cardiac Activity |
86%
From NCERT
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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%
From NCERT
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The cardiac output can be increased by:
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. | Sympathetic neural signals |
| II. | Adrenal cortical hormones |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Regulation of Cardiac Activity |
From NCERT
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Consider the two statements:
| Assertion (A): | Adrenal medullary hormones can increase the cardiac output. |
| Reason (R): | Adrenal medullary hormones are steroids with prominent effects on osmoregulation and glucose homeostasis in human body. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Regulation of Cardiac Activity |
51%
From NCERT
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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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- 1(current)
Q. No.
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