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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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The deoxygenated blood from the cardiac muscles is returned to the right atrium by:

1. coronary sinus 2. pre-caval vein
3. post-caval vein 4. pulmonary veins
Subtopic:  Human Heart: Double Circulation |
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Identify the incorrectly matched pair:
1. Average duration of a cardiac cycle: 0.8 sec
2. Stroke volume of each ventricle: 120 ml
3. Highest normal systolic blood pressure: 140 mm Hg
4. Highest normal diastolic blood pressure: 90 mm Hg

Subtopic:  Human Heart: Double Circulation |
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