AP BIOLOGY

Detailed explanation-1: -The coccyx, or tailbone, is the remnant of a lost tail. All mammals have a tail at one point in their development; in humans, it is present for a short time during embryonic development.

Detailed explanation-2: -Function of the Coccyx Although the tailbone is considered vestigial (or no longer necessary) in the human body, it does have some function in the pelvis. For instance, the coccyx is one part of a three-part support for a person in the seated position.

Detailed explanation-3: -Vestigial organs are the organs which were functional in their past but lost its function during the course of evolution. Human tailbone is also known as coccyx. The coccyx is a remnant of a tail from our ancestors.

Detailed explanation-4: -The embryonic tail usually grows into the coccyx or the tailbone. The tailbone is a bone located at the end of the spine, below the sacrum. Sometimes, however, the embryonic tail doesn’t disappear and the baby is born with it. This is a true human tail.

Detailed explanation-5: -The tailbone, located at the end of the spine, 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.