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Q. No.Which among the following is correct during each cardiac cycle?
1.
The volume of blood pumped by right and left ventricles is same
2.
The volume of blood pumped by right and left ventricles is different
3.
The volume of blood received by right and left atria is different
4.
The volume of blood received by pulmonary arteries and aorta is different
Subtopic: Human Heart: Double Circulation |
73%
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Two atria are present in the heart of all the following vertebrates except:
| 1. | Fishes | 2. | Amphibians |
| 3. | Crocodiles | 4. | Birds |
Subtopic: Blood: General Description & RBC |
84%
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Match each item in Column I with one in Column II and select the correct answer from the codes given:
| Column I | Column II | ||
| A. | Heart failure | a. | Lowered ejection fraction of a ventricle |
| B. | Heart attack | b. | Damage to the cardiac muscle |
| C. | Heart block | c. | Abnormal delay in conduction in nodal tissue |
| D. | Cardiac arrest | d. | Sudden stoppage of the heart |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | b | a | d | c |
| 4. | a | d | b | c |
Subtopic: ECG & Coronary Artery Disease |
78%
From NCERT
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Cardiac activity could be moderated by the autonomic nervous system. Tick the correct answer:
| 1. | The parasympathetic system stimulates heart rate and stroke volume |
| 2. | The sympathetic system stimulates heart rate and stroke volume |
| 3. | The parasympathetic system stimulates heart rate but decreases stroke volume |
| 4. | The sympathetic system stimulates heart rate but decreases stroke volume |
Subtopic: Regulation of Cardiac Activity |
80%
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State of the heart when it is not pumping blood effectively to meet needs of body is called as:
| 1. Heart attack | 2. Heart block |
| 3. Cardiac arrest | 4. Heart failure |
Subtopic: ECG & Coronary Artery Disease |
85%
From NCERT
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A vein, in general, can be distinguished from an artery by:
| 1. | Absence of valves | 2. | Thin tunica media |
| 3. | Absence of tunica externa | 4. | Absence of tunica media |
Subtopic: Blood: General Description & RBC |
75%
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Platelets are cell fragments that:
| I: | are produced from megakaryocytes in the spleen in fetal life |
| II: | can release variety of factors involved in blood coagulation |
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: General Description & RBC |
53%
From NCERT
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Both heart rate and stroke volume in a human get doubled during exercise. His cardiac output will:
1. double
2. become four times
3. become eight times
4. remain the same
1. double
2. become four times
3. become eight times
4. remain the same
Subtopic: Human Heart: Double Circulation |
81%
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What would be true for the white blood cell shown in the given diagram?
| 1. | They differentiate into phagocytic cells |
| 2. | They secrete histamine and heparin in the blood |
| 3. | They are responsible for providing adaptive immunity in vertebrates |
| 4. | Their number is increased in acute bacterial infections |
Subtopic: Blood: White Blood Cells |
52%
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An Rh –ve person, when exposed to Rh +ve blood:
| 1. | will form antibodies against the Rh antigen |
| 2. | will be unaffected |
| 3. | will form antibodies against the Rh antigen only on second exposure |
| 4. | will receive anti Rh antibodies from the donor |
Subtopic: Blood: Blood Group (A,B,O) |
81%
From NCERT
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