Q. No.The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted into him. It is likely that it will be grafted at the site of:
1. Purkinje system
2. Sinoatrial node
3. Atrioventricular node
4. Atrioventricular bundle
Lead concentration in blood is considered alarming if it is:
1. 30 µg/100 ml
2. 4-6 µg/100 ml
3. 10 µg/100 ml
4. 20 µg/100 ml
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In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be:
| 1. | O | 2. | AB |
| 3. | A | 4. | B |
Ventricular contraction is in command of :
1. S.A. Node
2. A.V. Node
3. Purkinje fibers
4. Papillary muscles
Which of following occurs in maximum concentration in blood plasma (ECF):
| 1. | \(K^+\) | 2. | \(Mg^{+2}\) |
| 3. | \(Ca^{+2}\) | 4. | \(Na^+\) |
Agglutination occurs in blood present in a test tube. This indicates:
| 1. | Antibodies are present in plasma |
| 2. | Antigens are present on R.B.C. |
| 3. | Antigens are present in plasma |
| 4. | Antibodies are present on R.B.C |
At which point, the pulmonary artery is different from the pulmonary vein:
1. Its lumen is broad
2. Its wall is thick
3. It has valves
4. It does not possess endothelium
The reason why hair loss is more in old age:
| 1. | Reduction of blood supply |
| 2. | Decrease in protein synthesis |
| 3. | Low energy production |
| 4. | Reduced storage of glycogen |
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Erythroblastosis fetalis is caused when:
| 1. | Rh– female & Rh+ male |
| 2. | Rh+ female & Rh– male |
| 3. | Rh+ female & Rh+ male |
| 4. | Rh– female & Rh– male |
Which statement is true for WBC:
| 1. | Non-nucleated |
| 2. | In deficiency cancer is caused |
| 3. | Manufactured in the thymus |
| 4. | Can squeeze through blood capillaries |
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