This muscular tube attached to the large intestine helps in the digestion especially during those primitive days where human diet were largely made up of plants. It also produces white blood cells. Since human diet goes with today’s trend, this chamber becomes dormant and at times causes a problem like appendicitis, an inflammation of an appendix.
The coccyx, also called a tailbone is located at the end of the spine. It has lost its original function in assisting balance and mobility, though it still serves some secondary functions, such as being an attachment point for muscles, which explains why it has not degraded further. But in some cases, a tail approximately twelve centimeters long was able to be surgically removed, and the individuals have resumed normal lives.