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Class 9 Exam  >  Class 9 Questions  >  Life span of RBC isa)50 daysb)75 daysc)120 da... Start Learning for Free
Life span of RBC is
  • a)
    50 days
  • b)
    75 days
  • c)
    120 days
  • d)
    100 days
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Life span of RBC isa)50 daysb)75 daysc)120 daysd)100 daysCorrect answe...
RBC's also known as red blood cells are formed in the bone marrow by erythropoiesis. They have an average lifespan of 120 days.  After ageing, they are selectively recognized in the spleen, liver and lymph nodes by macrophages followed by phagocytosis. This process is called eryptosis
So, the correct answer is '120 days'.
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Most Upvoted Answer
Life span of RBC isa)50 daysb)75 daysc)120 daysd)100 daysCorrect answe...
Life cycle. Human red blood cells are produced through a process named erythropoiesis, developing from committed stem cells to mature red blood cells in about 7 days. When matured, in a healthy individual these cells live in blood circulation for about 100 to 120 days (and 80 to 90 days in a full term infant).
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Life span of RBC isa)50 daysb)75 daysc)120 daysd)100 daysCorrect answe...
Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days.
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Life span of RBC isa)50 daysb)75 daysc)120 daysd)100 daysCorrect answer is option 'C'. Can you explain this answer?
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