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Q. No.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 |
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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 |
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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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How many of the given statements are correct?
1. 1
2. 2
3. 3
4. 5
| A: | Left atrium has the thickest musculature in the human heart. |
| B: | SA node is located in the wall of the right atrium. |
| C: | Right ventricle pumps oxygenated blood into aorta. |
| D: | Heart is covered by a double-layered pericardium. |
| E: | Left atrium receives deoxygenated blood through pulmonary veins. |
2. 2
3. 3
4. 5
Subtopic: Human Heart: Gross Anatomy |
57%
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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 |
64%
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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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Which WBC has a large kidney-shaped nucleus, does not have granules in the cytoplasm, and after differentiation performs phagocytosis?
1. Neutrophil
2. Basophil
3. Lymphocyte
4. Monocyte
Subtopic: Blood: White Blood Cells |
78%
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Which of the following best describes the correlation between heart sounds and events of the cardiac cycle?
| 1. | The first heart sound (S1), also known as "lub," is produced by the closing of the semilunar valves at the beginning of systole. |
| 2. | The second heart sound (S2), also known as "dub," is produced by the closing of the atrioventricular valves at the end of systole. |
| 3. | The first heart sound (S1), also known as "lub," is produced by the closing of the atrioventricular valves at the beginning of systole. |
| 4. | The second heart sound (S2), also known as "dub," is produced by the reopening of the atrioventricular valves at the beginning of diastole. |
Subtopic: Human Heart: Cardiac Cycle |
84%
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Which of the following statement(s) about pulmonary and systemic circulation is/are correct?
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
| A: | Pulmonary circulation transports oxygen-rich blood from the heart to the rest of the body, while systemic circulation brings oxygen-poor blood back to the heart. |
| B: | Pulmonary circulation carries oxygen-poor blood from the heart to the lungs and returns oxygen-rich blood back to the heart, while systemic circulation moves oxygen-rich blood from the heart to the body and returns oxygen-poor blood to the heart. |
2. Only B
3. Both A and B
4. Neither A nor B
Subtopic: Human Heart: Double Circulation |
80%
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