Q. No.The activities of the human heart can be regulated through the autonomic nervous system by a special neural center located in:
1.
Medulla oblongata
2.
Hypothalamus
3.
Mid brain
4.
Cerebrum
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The functions of spleen include all of the following except:
1. Mechanical filtration of red blood cells.
2. Production of all types of blood cells during fetal life
3. Storage of red blood cells, lymphocytes and other formed elements.
4. Suppression of cell mediated and humoral immune responses
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In the nodal tissue of the human heart, the highest conduction velocity is seen in:
| 1. Internodal pathway | 2. AV node |
| 3. AV bundle or Bundle of His | 4. Purkinje fibers |
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State of the heart when it is not pumping blood effectively to meet needs of body is called as:
| 1. Heart attack | 2. Heart block |
| 3. Cardiac arrest | 4. Heart failure |
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Identify the incorrectly matched pair:
|
1. |
Most abundant plasma protein |
Albumin |
|
2. |
Most abundant agranulocyte in blood |
Neutrophil |
|
3. |
Most abundant circulating antibody |
IgG |
|
4. |
Second most abundant formed elements in blood |
Thrombocytes |
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Given below are four statements (a-d) regarding human blood circulatory system:
| (a) | Arteries are thick-walled and have narrow lumen as compared to veins. |
| (b) | Angina is acute chest pain when the blood circulation to the brain is reduced. |
| (c) | Persons with blood group AB can donate blood to any person with any blood group under the ABO system. |
| (d) | Calcium ions play a very important role in blood clotting. |
Which two of the above statements are correct?
| 1. (a) and (b) | 2. (b) and (c) |
| 3. (c) and (d) | 4. (a) and (d) |
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In humans, blood passes from the post-caval to the diastolic right atrium of heart due to
1. Pressure difference between the post-caval and atrium
2. Pushing open of the venous valves
3. Suction pull
4. Stimulation of the sinoatrial node
Select the option having all the correct characteristics :
| Structure | Percentage | Function | |
| 1. |  |
0.3-0.5 | Phagocytic |
| 2. |  |
0.5-1.0 | Secrete histamine |
| 3. |  |
30-40 | Defense against parasites |
| 4. |  |
30-40 | Allergic reactions |
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Match the following columns and select the correct option.
| Column I | Column II | ||
| (a) | Eosinophils | (i) | Immune response |
| (b) | Basophils | (ii) | Phagocytosis |
| (c) | Neutrophils | (iii) | Release histaminase, destructive enzymes |
| (d) | Lymphocytes | (iv) | Release granules containing histamine |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (iii) | (iv) | (ii) | (i) |
A person with which of the following blood groups can receive blood from a donor of only his/her own blood group?
| 1. O | 2. A |
| 3. B | 4. AB |
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