Q. No.
Examination of blood of a person suspected to be suffering from anemia shows a decrease in the number of all formed elements. He is most likely suffering from:
1. Iron deficiency
2. Megaloblastic anemia
3. Bone marrow dysfunction
4. Liver dysfunction
A leakage of plasma out of the blood capillaries will lead to:
1. A decrease in plasma proteins
2. Increased hematocrit
3. Polycythemia
4. Hemolysis
An Rh +ve female is pregnant with an Rh –ve fetus for the second time. The consequences can be:
| 1. | The fetus can have severe anemia or jaundice |
| 2. | The mother can have delayed reactions and may develop jaundice |
| 3. | There will be no consequences |
| 4. | The fetus will have growth and mental retardation |
Formed elements and clotting factors are removed from the blood. The remaining fluid will be called as:
| 1. | Plasma | 2. | Lymph |
| 3. | Serum | 4. | Antiserum |
Normal activities of the heart are regulated:
1. intrinsically
2. by adrenal medullary hormones
3. by sympathetic nervous system
4. by parasympathetic nervous system
Exchange of nutrients and gases between the blood and the cells always occurs:
1. by active transport
2. with the help of transport carrier proteins
3. at the arterial end of the capillary network
4. through the interstitial fluid
The nodal musculature of the heart has the capability to generate impulse:
| 1. | on stimulation by the sympathetic division of the autonomic nervous system |
| 2. | on stimulation by the parasympathetic division of the autonomic nervous system |
| 3. | on stimulation by the somatic neural division of the peripheral nervous system |
| 4. | without any external stimulus |
Match each item in Column I with one in Column II and select the correct answer from the codes given:
| Column I | Column II | ||
| A. | Closure of AV valves | a. | Second heart sound |
| B. | Closure of semilunar valves | b. | First heart sound |
| C. | Opening of AV valves | c. | Ventricular ejection |
| D. | Opening of semilunar valves | d. | Passive ventricular filling |
Codes:
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | b | a | d | c |
| 4. | a | b | d | c |
The SA node is called as the normal pacemaker of the human heart because:
| 1. | it is the only muscle in the nodal tissue and human heart is myogenic |
| 2. | it is the remnant of the sinus venosus |
| 3. | it is located in the right atrium, and atria must contract before ventricles |
| 4. | it generates impulse at maximum rate in the nodal tissue |
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