Question

why do human have coccyx bone ?​

Answer 1

Answer:

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Weight is distributed between the bottom portions of the two hip bones (or ischium) and the tailbone, providing balance and stability when a person is seated. The tailbone is the connecting point for many pelvic floor muscles.

Answer 2

Answer: The Tailbone: Grandpa didn't have a tail, but if you go back far enough in the family tree, your ancestors did. Other mammals find their tails useful for balance, but when humans learned to walk, the tail because useless and evolution converted it to just some fused vertebrae we call a coccyx.