Q. No.Two atria are present in the heart of all the following vertebrates except:
1.
Fishes
2.
Amphibians
3.
Crocodiles
4.
Birds
Cardiac activity could be moderated by the autonomic nervous system. Tick the correct answer:
| 1. | The parasympathetic system stimulates heart rate and stroke volume |
| 2. | The sympathetic system stimulates heart rate and stroke volume |
| 3. | The parasympathetic system stimulates heart rate but decreases stroke volume |
| 4. | The sympathetic system stimulates heart rate but decreases stroke volume |
What would be true for the white blood cell shown in the given diagram?
| 1. | They differentiate into phagocytic cells |
| 2. | They secrete histamine and heparin in the blood |
| 3. | They are responsible for providing adaptive immunity in vertebrates |
| 4. | Their number is increased in acute bacterial infections |
Which of the following would not be normal in a healthy human being?
1. A cells/blood ratio of 45%
2. A plasma albumin concentration of 4%
3. An RBC count of 5.2 million mm-3
4. A hemoglobin level of 15 gram per liter
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 |
1. Ventricular depolarization
2. Ventricular repolarization
3. Atrial depolarization
4. Atrial repolarization
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 |
To begin the blood clot formation cascade, the enzyme complex required is:
| 1. | Thromboxane A2 | 2. | Thrombin |
| 3. | Thrombokinase | 4. | Heparin |
Match the plasma proteins in Column I with their function in Column II and select the correct answer from the codes given:
| Column I | Column II | ||
| A. | Albumins | a. | Hemostasis |
| B. | Globulins | b. | Transport carriers and immunity |
| C. | Fibrinogen | c. | Colloid osmotic pressure |
Codes:
| A | B | C | |
| 1. | a | b | c |
| 2. | a | c | b |
| 3. | b | a | c |
| 4. | c | b | a |
The autonomic regulation of cardiac activity is carried out by a neural center located in:
| 1. | Medulla oblongata | 2. | Hypothalamus |
| 3. | Cerebrum | 4. | Thalamus |
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