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Q. No.The stroke volume of left ventricle in a person is 75 ml. His cardiac output is 6000 ml. What will be his heart rate?
1.
72 per minute
2.
75 per minute
3.
80 per minute
4.
100 per minute
Subtopic: Human Heart: Cardiac Cycle |
81%
Level 1: 80%+
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During the ventricular systole:
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 atria also undergo systole |
| II: | The atrioventricular valves get closed |
| III: | The semilunar valves are forced open |
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 |
87%
Level 1: 80%+
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Thrombokinase:
| 1. | is an enzyme formed in and secreted by the platelets |
| 2. | is an enzyme complex required to convert prothrombin into thrombin |
| 3. | dissolves the intravascular clots |
| 4. | prevents coagulation of the blood |
Subtopic: Blood: Blood Clotting |
91%
Level 1: 80%+
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What is incorrect regarding human heart?
1. It is neurogenic
2. It is derived from embryonic mesoderm
3. It is a muscular pump
4. It is located in thorax between the lungs
1. It is neurogenic
2. It is derived from embryonic mesoderm
3. It is a muscular pump
4. It is located in thorax between the lungs
Subtopic: Regulation of Cardiac Activity |
89%
Level 1: 80%+
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A cardiovascular centre that can moderate the cardiac function through the autonomic neural system is located in the:
| 1. | Pons varoli | 2. | Medulla oblongata |
| 3. | Hypothalamus | 4. | Cerebrum |
Subtopic: Regulation of Cardiac Activity |
89%
Level 1: 80%+
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The cell shown in the given diagram:
| 1. | is a bone marrow stem cells committed to produce RBCs |
| 2. | is the megakaryocyte |
| 3. | is the commonest WBC and is phagocytic |
| 4. | is responsible for acquired immunity in humans |
Subtopic: Blood: White Blood Cells |
83%
Level 1: 80%+
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Consider the given two statements:
| I: | SA node is the natural pacemaker of the human heart. |
| II: | SA node is the only part of that nodal musculature that is auto-excitable. |
| 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: Human Heart: Gross Anatomy |
61%
Level 2: 60%+
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An increase in the ventricular pressure during ventricular systole leads first to:
1. closure of tricuspid and bicuspid valves
2. opening of aortic and pulmonic semilunar valves
3. opening of tricuspid and bicuspid valves
4. Closure of aortic and pulmonic semilunar valves
1. closure of tricuspid and bicuspid valves
2. opening of aortic and pulmonic semilunar valves
3. opening of tricuspid and bicuspid valves
4. Closure of aortic and pulmonic semilunar valves
Subtopic: Human Heart: Cardiac Cycle |
75%
Level 2: 60%+
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Consider the given two statements:
| I: | The type of antigen present on the RBCs of a person with blood group type A is A. |
| II: | The type of antibodies present in the plasma of a person with blood group type A is anti-A. |
| 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: Blood: Blood Group (A,B,O) |
80%
Level 1: 80%+
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Cardiac output can be increased by:
| I: | Neural signals through sympathetic nerves |
| II: | Neural signals through parasympathetic nerves |
| III: | Adrenal medullary hormones |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II and III |
Subtopic: Regulation of Cardiac Activity |
84%
Level 1: 80%+
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