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Q. No.Mixing of oxygenated and deoxygenated blood occurs in the heart of
1. Bird
2. Crocodile
3. Rabbit
4. Frog
Subtopic: Circulatory Pathways |
84%
From NCERT
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Which of the following values will not be normal for a healthy person?
1. 10 gms of haemoglobin per 100 ml of blood
2. 5 million RBC per mm3
3. 7000 WBC per mm3
4. 200000 platelets per mm3
1. 10 gms of haemoglobin per 100 ml of blood
2. 5 million RBC per mm3
3. 7000 WBC per mm3
4. 200000 platelets per mm3
Subtopic: Blood: General Description & RBC |
73%
From NCERT
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If an Rh –ve mother is carrying an Rh +ve foetus, she is likely to be exposed to the Rh antigen:
1. At the time of implantation of the blastocyst
2. At the time when the placenta becomes functional
3. When the first movements of the baby can be felt
4. At the time of delivery
1. At the time of implantation of the blastocyst
2. At the time when the placenta becomes functional
3. When the first movements of the baby can be felt
4. At the time of delivery
Subtopic: Blood: Blood Group |
90%
From NCERT
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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
1. 72 per minute
2. 75 per minute
3. 80 per minute
4. 100 per minute
Subtopic: Human Heart: Cardiac Cycle |
78%
From NCERT
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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 |
85%
From NCERT
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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 |
90%
From NCERT
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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 |
86%
From NCERT
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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 |
88%
From NCERT
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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 |
82%
From NCERT
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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 |
56%
From NCERT
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