The normal red cell lasts approximately ______ before it is destroyed.(a) 90 days(b) 210 days(c) 120 days(d) 60 daysThe question was posed to me in a job interview.Origin of the question is Intravascular Oximeters in division Oximeters of Biomedical Instrumentation

The normal red cell lasts approximately ______ before it is destroyed.

1.	The normal red cell lasts approximately ______ before it is destroyed.(a) 90 days(b) 210 days(c) 120 days(d) 60 daysThe question was posed to me in a job interview.Origin of the question is Intravascular Oximeters in division Oximeters of Biomedical Instrumentation
Answer» Right answer is (C) 120 days The explanation is: In the whole body, there are about 25 billion erythrocytes and they are constantly being destroyed and replaced at a rate of about 9000 MILLION per hour. The normal red CELL lasts approximately 120 days before it is destroyed.

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