Question

What is the life span of a human somatic cell ? Whether life span of all the cells in our body is same?

Answer 1

Life span of the cells in our body varies.
Red blood cells live for about four months, while white blood cells live on average more than a year. Skin cells live about two or three weeks. Colon cells have it rough: They die off after about four days. Sperm cellshave a life span of only about three days, while brain cells typically last an entire lifetime (neurons in the cerebral cortex, for example, are not replaced when they die).