A person with AB blood group:

1. Has A and B antigens in his plasma

2. Lacks any antibodies on RBC surface

3. Can receive blood transfusion from a person of his own group.

4. Can donate blood to all other group recipients

Subtopic:  Blood: Blood Group (A,B,O) |
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The inter-atrial septum in the human heart can be best described as:

1. A thin muscular wall

2. A thick muscular wall

3. A thin fibrous tissue

4. A thick fibrous tissue

Subtopic:  Human Heart: Gross Anatomy |
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The sino-atrial node is the normal pacemaker of the human heart because:

1. It is located in the right atrium

2. It is the only part of the conducting system that can generate impulse

3. It can generate the maximum number of action potentials in the conducting system

4. It produces action potentials that are more in size than the other parts of the conducting system.

Subtopic:  Human Heart: Gross Anatomy |
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What percentage of ventricular filling is achieved by atrial contraction?

1. 30

2. 50

3. 70

4. 90

Subtopic:  Human Heart: Double Circulation |
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In a surface ECG the QRS complex represents:

1. Atrial depolarization

2. Atrial repolarization

3. Ventricular depolarization

4. Ventricular repolarization

Subtopic:  ECG & Coronary Artery Disease |
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Normal activities of the human heart are regulated:

1. Intrinsically

2. By the autonomic nervous system

3. By the brain stem

4. By the diencephalon

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
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A common symptom produced by myocardial ischemia is:

1. Hypertension

2. Vertigo

3. Angina

4. Hyperventilation

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
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The steps of the cardiac cycle in sequence are...

1. isovolumic contraction, isovolumic relaxation, ejection, passive ventricular filling, active ventricular filling.

2. isovolumic relaxation, isovolumic contraction, ejection, passive ventricular filling, active ventricular filling.

3. isovolumic contraction, ejection, isovolumic relaxation, passive ventricular filling, active ventricular filling.

4. isovolumic contraction, ejection, isovolumic relaxation, active ventricular filling, passive ventricular filling

 

Subtopic:  Human Heart: Cardiac Cycle |
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A decrease in plasma albumin levels is likely to affect:

1. Clot formation

2. Oxygenation of hemoglobin

3. Osmotic balance

4. Immune functions

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
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Which of the following is a correct statement:

1. The volume of blood in pulmonary circulation is more than the volume of blood in systemic circulation at any instant

2. The blood pressure in pulmonary circulation is less than that of the systemic circulation

3. Double circulation is characteristic of all vertebrates

4. A double aortic arch is seen in birds and mammals

Subtopic:  Human Heart: Cardiac Cycle |
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