Body fluids and Circulation
ICSE · Class 11 · Biology
Practice quiz for Body fluids and Circulation — ICSE Class 11 Biology. MCQs and questions with answers to test your preparation.
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What is the normal RBC count in an adult male?
Which valve separates the left atrium from the left ventricle?
What is the pacemaker of the human heart?
Which blood group is the universal donor?
Sample Questions
The first heart sound (lub) is produced by closure of:
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AV valves (tricuspid and mitral)
The first heart sound (lub) is caused by closure of the AV valves (both tricuspid and bicuspid/mitral) at the BEGINNING of ventricular systole. The second heart sound (dub) is caused by closure of semilunar valves.
Normal blood pressure in a healthy adult is:
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120/80 mmHg
Normal blood pressure is 120 mmHg (systolic) / 80 mmHg (diastolic). Hypertension is defined as BP persistently above 140/90 mmHg.
What is the normal platelet count per mm3?
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200,000-300,000 (2-3 lakh)
Normal platelet (thrombocyte) count is 2-3 lakh per mm3 (200,000-300,000/mm3). Low platelets = thrombocytopenia; high = thrombocytosis.
Which blood group is the universal recipient?
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Group AB
Group AB is the universal recipient because its plasma has NO antibodies (neither anti-A nor anti-B). Therefore it can receive blood from any ABO group without agglutination.
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