Body Fluids and Circulation

In humans, blood passes from the post caval to the diastolic right atrium of heart due to

1. stimulation of the sino auricular node
2. pressure difference between the post caval and atrium
3. pushing open of the venous valves
4. suction pull

The most active phagocytic white blood cells are

1. eosinophils and lymphocytes
2. neutrophils and monocytes
3. neutrophils and eosinophils
4. lymphocytes and macrophages

Which type of white blood cells are connected with the release of histamine and the natural anticoagulant heparin?

1. Eosinophils
2. Monocytes
3. Neutrophils
4. Basophils

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

1. Blood serum
2. Sample from the thoracic duct of lymphatic system
3. Whole blood from pulmonary vein
4. Blood plasma

If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?

1. Serum albumins
2. Fibrinogen in the plasma
3. Serum globulins
4. Haemocytes

Examination of blood of a person suspected of having anaemia shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following is likely to alleviate his symptoms?

1. Iron compounds
2. Thiamine
3. Folic acid and cobalamin
4. Riboflavin

You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of these will you not use for the purpose?

1. Test tube containing calcium bicarbonate
2. Chilled test tube
3. Test tube containing heparin
4. Test tube containing sodium oxalate.

Systemic heart refers to

1. the heart that contracts under stimulation from 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. atrioventricular bundle
2. Purkinje system
3. sino-atrial node
4. atrioventricular node.

Bundle of His is a network of

1. muscle fibres distributed throughout the heart walls
2. muscle fibres found only in the ventricle wall
3. nerve fibres distributed in ventricles
4. nerve fibres found throughout the heart.