Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus

A human RBC is placed in 1.5% salt solution. It will
1. swell up
2. shrink
3. remain unaffected
4. burst

All veins carry deoxygenated blood except
1. pulmonary vein
2. hepatic vein
3. hepatic portal vein
4. renal vein

Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?
1. Urea - 5-10 mg/100 ml of blood
2. Blood sugar (fasting) - 80-100 mg/100 ml
3. Total blood volume - 3-4 litres
4. ESR in Wintrobe method - 9-15 mm in males and 20-34 mm in females

Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to:
1. vitamin toxicity
2. kidney stones
3. hypercholesterolemia
4. urine laden with kidney stones

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