Which one of the following is a matching pair

• Lubb - Sharp closure of AV valves at the beginning of ventricular systole

• Dup - Sudden opening of semilunar valves at the beginning of ventricular diastole

• Pulsation of the radial artery - Valves in the blood vessels

• Initiation of the heart beat - Purkinje fibres

The component of blood which prevents its coagulation in the blood vessels is

• Haemoglobin

• Plasma

• Thrombin

• Heparin

Thickening of arteries due to cholesterol deposition is

• arteriosclerosis

• rheumatic heart

• blood pressure

• cardiac arrest

Assertion : Blood coagulate in uninjured blood vessels.

Reason : Uninjured blood vessels release an anticoagulant heparin.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Assertion : Smaller the organism higher is the rate of metabolism per gram weight.

Reason : The heart rate of a six month old baby is much lower than that of an old person.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

The given figure shows an angiogram of the coronary blood vessel. Which one of the following statements correctly describes, what is being done

• It is coronary artery which has a cancerous growth that is being removed.

• It is coronary artery which is blocked by a plaque and the same is being cracked.

• It is coronary vein in which the defective valves are being opened.

• It is coronary vein blocked by a parasite (blood fluke) that is being removed.

107.

Formation of non-functional methaemoglobin causes blue-baby syndrome. This is due to

• excess of arsenic concentration in drinking water

• excess of nitrates in drinking water

• deficiency of iron in food

• increased methane content in the atmosphere

In which one of the following pairs the two items mean one and the same thing

• Malleus - anvil

• SA node - pacemaker

• Leucocytes - lymphocytes

• Haemophilia - blood cancer

Assertion : Persons suffering from haemophilia fail to produce blood clotting factor VIII.

Reason : Prothrombin producing platelets in such persons are found in very low concentration

• If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

• If both Assertion and Reason are true but the Reason is not the correct explanation of the assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?

• Urea- 5 - 10 mg/100 ml of blood

• Blood sugar (fasting) - 80 - 100 mg/100 ml

• Total blood volume - 3 - 4 litres

• ESR in Wintrobe method - 9 -15 mm in males and 20 - 34 mm in females