The following is the diagrammatic representation of standard ECG. Identify the correct statement :

1. P is caused by atrial repolarization

2. Q, when present, always shows myocardial ischemia

3. QRS complex is due to time taken by impulse from SA node to AV node

4. T is caused by ventricular repolarization

Subtopic:  ECG & Coronary Artery Disease |
 87%
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In the given section of the human heart which part ensures that atria contact prior to the ventricles ?

1. A

2. B

3. C

4. D

Subtopic:  Human Heart: Cardiac Cycle |
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The second largest constituent of plasma is:

(1) Water

(2) Proteins

(3) Glucose

(4) Hormones

 

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
 86%
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Factors that can initiate coagulation of blood can be released by:
I. Platelets in the blood
II. Tissues at the site of injury
III. Liver
1. I and II only
2. I and III only
3. II and III only
4. I, II and III

Subtopic:  Blood: Blood Clotting |
 74%
From NCERT
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Interstitial fluid resembles plasma in the same distribution of:

(1) Formed elements

(2) Proteins

(3) Minerals

(4) Enzymes

 

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
From NCERT
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A tricuspid valve will prevent of blood flow from:
1 Right atrium to right ventricle
2. Right ventricle to right atrium
3. Left atrium to left ventricle
4. Left ventricle to left atrium

Subtopic:  Human Heart: Gross Anatomy |
 65%
From NCERT
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Purkinje fibers are:

(1) Intrinsic neural fibers in the ventricles

(2) Muscle fibers that interconnect SA node and AV node

(3) Muscle fibers that are distributed in the ventricular musculature

(4) Neural fibers that spread the impulse throughout the ventricular muscle mass

 

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
 73%
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When the stroke volume of the ventricles is much less than the expected values, the heart is said to be:

(1) Fibrillating

(2) Blocked

(3) Arrested

(4) Failing                  

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 63%
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On a surface ECG, the end of ventricular systole is marked by:

(1) The end of the QRS complex

(2) The beginning of T wave

(3) The end of T wave

(4) The beginning of P wave

 

Subtopic:  ECG & Coronary Artery Disease |
 53%
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A normal blood pressure reading in a healthy adult human being would be:
I. 116/76 mm Hg
II. 150/80 mm Hg
III. 120/ 94 mm Hg
1. Only I
2. Both I and II
3. Both I and III
4. I, II and III

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 55%
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