Structural-Organisation-In-Animals Question 576
Question: The life span of human WBC is approximately [CBSE PMT 1997]
Options:
A) Less than 10 days
B) Between 20 to 30 days
C) Between 2 to 3 months
D) More than 4 months
Show Answer
Answer:
Correct Answer: A
Solution:
The life span of the granulocytes once released from the bone marrow is normally 4-8 hours circulating in the blood and another 4 to 5 days in the tissue. The monocyte also have a short life span of 10 to 20 hours. The lymphocytes have life spans of few days or months or even years, but this depends on the body?s need for these cells.
BETA
