The second heart sound [dub] is associated with simultaneous closure of:

1. Right AV and pulmonary semilunar valve
2. Left AV and aortic semilunar valve
3. Right and left AV valves
4. Right and left semilunar valves

Subtopic:  Human Heart: Cardiac Cycle |
 86%
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The least common of WBCs in the human blood are:

 
1. Eosinophils 2. Lymphocytes
3. Neutrophils 4. Basophils
Subtopic:  Blood: White Blood Cells |
 85%
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Which of the following is not represented on an ECG of a healthy individual?

1. Ventricular depolarization 2. Ventricular repolarization
3. Atrial depolarization 4. Atrial repolarization
Subtopic:  ECG & Coronary Artery Disease |
 82%
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The enzyme that activates fibrinogens in the blood is:

1. Thromboplastin 2. Thrombokinase
3. Thrombin 4. Plasmin
Subtopic:  Blood: Blood Clotting |
 74%
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Blood enters the heart because muscles of the:

1. ventricles relax 2. ventricles contract
3. atria relax 4. atria contract
Subtopic:  Human Heart: Double Circulation |
 69%
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The portal systems seen in humans include:
I. Hepatic portal system
II. Renal portal system
III. Hypothalamic Hypophyseal portal system

1. I and II only 2. I and III only
3. II and III only 4. I, II and III
Subtopic:  Human Heart: Double Circulation |
 52%
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Passive filling accounts for about what percent of ventricular filling?

1. 30 2. 50
3. 70 4. 90
Subtopic:  Human Heart: Double Circulation |
 69%
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Which of the following recordings of blood pressure in a healthy person will be considered as normal?

1. 150/80 mmHg 2. 110/70 mmHg
3. 120/96 mmHg 4. 180/110 mmHg
Subtopic:  Blood: General Description & RBC |
 56%
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The period of systole is represented on surface ECG as between:
1. Beginning of P wave and beginning of Q wave
2. End of S wave and beginning of T wave
3. Shortly after Q wave and end of the T wave
4. Two successive R waves

Subtopic:  ECG & Coronary Artery Disease |
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Which of the following can be called as a ‘cascade’ process?
1. Micturition reflex
2. Formation of cross bridges in skeletal muscle contraction
3. Coagulation of blood
4. Regulation of respiration

Subtopic:  Blood: Blood Clotting |
 93%
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