Q. No.A drop of each of the following is placed separately on four slides. Which of them will not coagulate?
1. Whole blood from pulmonary vein
2. Blood plasma
3. Blood serum
4. Sample from the thoracic duct of lymphatic system
1. Whole blood from pulmonary vein
2. Blood plasma
3. Blood serum
4. Sample from the thoracic duct of lymphatic system
Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?
1. Monocytes
2. Neutrophils
3. Basophils
4. Eosinophils
The most active phagocytic white blood cells are
1. Neutrophils and monocytes
2. Neutrophils and eosinophils
3. Lymphocytes and macrophages
4. Eosinophils and lymphocytes
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
In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?
1. P-depolarization of ventricles
2. R-repolarization of ventricles
3. S-start of systole
4. T-end of diastole
The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because O in it refers to having
| 1. | No antigens A or B on RBCs. |
| 2. | Other antigens besides A and B on RBCs. |
| 3. | Overdominance of this type on the genes for A and B types. |
| 4. | One antibody only (either anti-A and anti-B) on the RBCs. |
Globulins contained in human blood plasma are primarily involved in
1. Clotting of blood
2. Defense mechanisms of body
3. Osmotic balance of body fluids
4. Oxygen transport in the blood
Compared to blood our lymph has
1. More RBCs and less WBCs
2. No plasma
3. Plasma without proteins
4. More WBCs and no RBCs
If due to some injury, the chordae tendineae of the tricuspid valve of the human heart are partially non-functional, what will be the immediate effect?
1. The blood will tend to flow back into the left atrium
2. The flow of blood into the pulmonary artery will be reduced
3. The flow of blood into aorta will be slowed down
4. The pacemaker will stop working
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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