In which one of the following pairs the two items mean one and the same thing?
1. Malleus - anvil
2. SA node - pacemaker
3. Leucocytes - lymphocytes
4. Haemophilia - blood cancer

Thickening of arteries due to cholesterol deposition is:

You are required to draw blood from a patient and 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

Which one of the following is a matching pair?
1. Lubb-sharp closure of AV valves at the beginning of ventricular systole
2. Dup-Sudden opening of semilunar valves at the beginning of ventricular diastole
3. Pulsation of the radial artery-valves in the blood vessels
4. Initiation of the heart beat - Purkinje fibers

In the given section of the human heart which part ensures that atria contract prior to the ventricles?
 
1. A
2. B
3. C
4. D

Assertion: The lack of mitochondria decreases the efficiency of oxygen transport by the red blood cells to the tissues.
Reason: Red blood cells are unable to make ATP of their own.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: No virus can evolve to target human red blood cells.
Reason: The human red blood cells are unable to carry out protein synthesis.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: ABO blood group incompatibilities between the mother and child do not usually cause hemolytic disease of the newborn.
Reason: Females do not make antibodies against A and B antigens.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: In patients of liver failure the risk of bleeding is increased.
Reason: Liver synthesizes most of the clotting factors and activates Vitamin K.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: During atrial systole, chordae tendinae contract to pull open the atrioventricular valves.
Reason: Chordae tendinae connect papillary muscles to the wall of the ventricles.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false