Body Fluids and Circulations

Assertion : The regulation of RBC production is accompanied by the kidneys.

Reason : Erythropoietin hormone circulates to the red bone marrow, where it increases stem cell mitosis and speeds up the development of RBCs.

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

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

• If assertion is true but reason is false.

• If both the assertion and reason are false.

All veins carry deoxygenated blood except

• pulmonary vein

• hepatic vein

• hepatic portal vein

• renal vein

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 universal recipient blood group is :

• O (+ ve)

• AB (+ ve)

• O (- ve)

• AB (- ve)

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 higher than that of an old person.

• 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 statement but Reason is false

• If both Assertion and Reason are false statements

A human RBC is placed in 1.5% salt solution. It will

• swell up

• shrink

• remain unaffected

• burst

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

Which of the following is wrongly matched?

• Haemoglobin in mammals - RBC

• Haemozoin - Plasmodium cytoplasm

• Haemocyanin- prawn

• Haemoglobin dissolved in blood - Pheretima

Which vertebrate orgen receives only oxygenated blood?

• Gill

• Lung

• Spleen

• Liver

Assertion: WBCs accumulate at the site of wounds by diapedesis.

Reason : It is the squeezing of leucocytes from
the endothelium.

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

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

• If assertion is true but reason is false.

• If both the assertion and reason are false.