Body Fluids and Circulation · Question 52

If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

1. The flow of blood into the aorta will be slowed down
2. The 'pacemaker' will stop working
3. The blood will tend to flow back into the left atrium
4. The flow of blood into the pulmonary artery will be reduced

There is no DNA in

1. mature RBCs
2. a mature spermatozoan
3. hair root
4. an enucleated ovum.

In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?

1. S - start of systole
2. T - end of diastole
3. P - depolarisation of the atria
4. R - repolarisation of ventricles

Globulins contained in human blood plasma are primarily involved in

1. osmotic balance of body fluids
2. oxygen transport in the blood
3. clotting of blood
4. defence mechanisms of body.

Compared to blood our lymph has

1. plasma without proteins
2. more WBCs and no RBCs
3. more RBCs and less WBCs
4. no plasma.

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