Select Chapter Topics:
Q. No.The atrial systole increases the flow of blood into the ventricles by about:
1.
10 percent
2.
30 percent
3.
50 percent
4.
70 percent
Subtopic: Human Heart: Cardiac Cycle |
90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
During ventricular diastole:
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: | closure of semilunar valves occurs. |
| II: | the tricuspid and bicuspid valves are pushed open. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Human Heart: Cardiac Cycle |
74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If the average duration of cardiac cycle were 0.6 seconds, the number of cardiac cycles per minute will be about:
| 1. | 60 | 2. | 75 |
| 3. | 72 | 4. | 100 |
Subtopic: Human Heart: Cardiac Cycle |
64%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the two statements:
| Assertion(A): | The cardiac output of an athlete will be much higher than that of an ordinary man. |
| Reason(R): | The body has the ability to alter the stroke volume as well as the heart rate and thereby the cardiac output. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 4. | (A) is False and (R) is True. |
Subtopic: Human Heart: Cardiac Cycle |
65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the two statements:
| Assertion (A): | Any deviation from the normal shape of ECG indicates a possible abnormality or disease. |
| Reason (R): | The ECGs obtained from different individuals have roughly the same shape for a given lead configuration. |
| 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: ECG & Coronary Artery Disease |
68%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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
Please attempt this question first.
Hints
Please attempt this question first.
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
Please attempt this question first.
Hints
Please attempt this question first.
Consider the two statements:
| Assertion (A): | Heart failure is sometimes called congestive heart failure. |
| Reason (R): | Heart failure means the state of heart when it is not pumping blood effectively enough to meet the needs of the 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: DISORDERS OF CIRCULATORY SYSTEM |
56%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Erythrocytes, or RBCs:
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | lack both a nucleus and mitochondria organelles. |
| II: | are much more common than leukocytes in the blood. |
| III: | require dietary iron and vitamin B12 for normal production. |
| IV: | have a circulating life span of about twelve months. |
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Blood: General Description & RBC |
92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Regarding erythroblastosis fetalis:
1. I, II, III and IV are correct
2. Only I and II are correct
3. Only III and IV are correct
4. Only I is correct
| I: | The baby is Rh positive and the mother is Rh negative. |
| II: | The mother's immune system has made antibodies against the Rh factor present on the red blood cells of the previous baby. |
| III: | Anaemia and jaundice in a baby are rare. |
| IV: | There is no mechanism to prevent its occurrence. |
1. I, II, III and IV are correct
2. Only I and II are correct
3. Only III and IV are correct
4. Only I is correct
Subtopic: Blood: Blood Group (A,B,O) | Blood: Blood Group |
87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2024 GoodEd Technologies Pvt. Ltd.