Assertion (A): Birds and Mammals have double circulation.
Reason (R): Two separate circulatory pathways are present in birds and mammals where the mixing of oxygenated and deoxygenated blood occurs.
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:  Human Heart: Double Circulation |
 84%
Level 1: 80%+
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Assertion (A): ECG is of great clinical significance.
Reason (R): It helps to diagnose possible abnormalities/diseases of the heart.
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:  ECG & Coronary Artery Disease |
 94%
Level 1: 80%+
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Assertion (A): Human heart is myogenic.
Reason (R): Normal activities of the heart are regulated by the human brain.
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:  Regulation of Cardiac Activity |
 73%
Level 2: 60%+
Hints

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Assertion (A): SAN is called the pacemaker of the heart.
Reason (R): It generates the maximum number of action potentials and hence, it sets the pace of heart beat.
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:  Rhythmic Excitation of Human Heart: Part 1 |
 95%
Level 1: 80%+
Hints

Assertion (A): Heart failure is sometimes called congestive heart failure.
Reason (R): Congestion of the lungs is one of the main symptoms of this disease.
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:   DISORDERS OF CIRCULATORY SYSTEM |
 89%
Level 1: 80%+
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Assertion (A): The heart rate of an individual can be determined by counting the number of QRS complexes.
Reason (R): The ECGs obtained from different healthy individuals have roughly the same shape for a given lead configuration.
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:  ECG & Coronary Artery Disease |
 71%
Level 2: 60%+
Hints

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Assertion (A): Cells need nutrients, O2, essential substances, and also the removal of harmful substances for healthy functioning.
Reason (R): It is essential to have efficient mechanisms for the movement of these substances to the cells and from the cells.
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 |
 54%
Level 3: 35%-60%
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Assertion (A): Persons with AB blood group are called universal recipients.
Reason (R): They can receive blood from the person with the O blood group.
 
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: Blood Group (A,B,O) |
 80%
Level 1: 80%+
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Assertion (A): Rh group should also be matched before transfusions.
Reason (R): An Rh-ve person, if exposed to Rh +ve blood, will form specific antibodies against the Rh antigens.
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: Blood Group |
 89%
Level 1: 80%+
Hints

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Assertion (A): SAN is called a pacemaker.
Reason (R): SAN is responsible for initiating and maintaining the rhythmic contractile activity of the heart.
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:  Rhythmic Excitation of Human Heart: Part 1 |
 94%
Level 1: 80%+
Hints