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Q. No.Regarding normal ECG tracings:
I:
The P-wave represents the electrical excitation (or depolarization) of the atria.
II:
The QRS complex represents the depolarization of the ventricles, which initiates the ventricular contraction.
III:
The end of the T-wave marks the end of diastole.
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
Subtopic: ECG & Coronary Artery Disease |
52%
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Which of the following events is not represented as a wave on the standard ECG?
1. Depolarisation of atria
2. Repolarisation of atria
3. Depolarisation of ventricles
4. Repolarisation of ventricles
1. Depolarisation of atria
2. Repolarisation of atria
3. Depolarisation of ventricles
4. Repolarisation of ventricles
Subtopic: ECG & Coronary Artery Disease |
82%
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Histamine, the mediator in inflammatory reactions, is released in the blood by:
| 1. | Basophils | 2. | Neutrophils |
| 3. | Eosinophils | 4. | Lymphocytes |
Subtopic: Blood: White Blood Cells |
87%
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Subtopic: Blood: General Description & RBC |
82%
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Comprising about 2-3% of the total white blood cells, which of the following resist infections and are also associated with allergic reactions?
| 1. | Eosinophils | 2. | Basophils |
| 3. | Monocytes | 4. | Lymphocytes |
Subtopic: Blood: White Blood Cells |
80%
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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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Regarding leucocytes:
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: | They are nucleated. |
| II: | Neutrophils, eosinophils and basophils are different types of granulocytes. |
| III: | Lymphocytes and monocytes are the agranulocytes. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Blood: White Blood Cells |
90%
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| Assertion(A): | Left ventricle pumps more blood than the right ventricle |
| Reason(R): | Left ventricle pumps deoxygenated blood and the right ventricle pumps oxygenated blood. |
| 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 False. |
Subtopic: Human Heart: Double Circulation |
From NCERT
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| Assertion(A): | A decrease in lymphocyte count in the blood will lead to an increased susceptibility to infections. |
| Reason(R): | Lymphocytes are responsible for phagocytosis in innate immune response. |
| 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. |
Subtopic: Blood: General Description & RBC |
From NCERT
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Identify the correct statements:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Humans have a closed circulatory system. |
| II: | Arthropods have an open circulatory system. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Circulatory Pathways |
91%
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