With respect to blood, the composition of lymph can be expressed as:

1. No RBc, No Plateletes, Less proteins, Less calcium and phosphorus, Predominant corpuscles lymphocytes.

2. No RBc, No Plateletes, Less proteins, More calcium and phosphorus, Predominant corpuscles lymphocytes.

3. No RBc, Less or no Plateletes, Less proteins, Less calcium and phosphorus, Predominant corpuscles macrophages.

4. No RBc, less Plateletes, Less proteins, Less calcium and phosphorus, Predominant corpuscles monocytes.

Subtopic:  Lymph |
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Histamine in the blood is secreted by:

1. Mast cells 2. Macrophages
3. Eosinophils 4. Basophils
Subtopic:  Blood: White Blood Cells |
 64%
From NCERT
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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) |
From NCERT
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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 |
 70%
From NCERT
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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 |
 70%
From NCERT
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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 |
 73%
From NCERT
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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 |
 87%
From NCERT
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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 |
 56%
From NCERT
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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 |
 61%
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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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