Q. No.Blood enters the heart because muscles of the:
1. ventricles relax
2. ventricles contract
3. atria relax
4. atria contract
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 |
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 |
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
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 |
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 |
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 |
To begin the blood clot formation cascade, the enzyme complex required is:
| 1. | Thromboxane A2 | 2. | Thrombin |
| 3. | Thrombokinase | 4. | Heparin |
A person has type A antigen on RBC and anti-B antibodies in plasma. He can receive blood from a person with blood group:
| 1. | A and O | 2. | AB, A, B and O |
| 3. | B and O | 4. | Only O |
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