Q. No.Systemic heart refers to
1. The heart that contracts under stimulation from the nervous system.
2. Left auricle and left ventricle in higher vertebrates.
3. Entire heart in lower vertebrates.
4. The two ventricles together in humans.
1. The heart that contracts under stimulation from the nervous system.
2. Left auricle and left ventricle in higher vertebrates.
3. Entire heart in lower vertebrates.
4. The two ventricles together in humans.
The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in 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
Which of the following substances, if introduced into the bloodstream, would cause coagulation of blood at the site of its introduction?
1. Thromboplastin
2. Fibrinogen
3. Heparin
4. Prothrombin
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
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
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