It still has some purpose as an attachment for muscles, but it is generally regarded as vestigial in humans.
It can consist of anywhere from three to five vertebrae, though in most people it's formed by four. Its anterior, concave surface helps to support the rectum and the rear border attaches to the gluteus maximus. It still has some purpose as an attachment for muscles, but it is generally regarded as vestigial in humans. It can serve as a shock absorber, but if you sit down too forcefully, it can cause pain. FTP, give this proper term for the tailbone, the final segment of the vertebral column. .
It can consist of anywhere from three to five vertebrae, though in most people it's formed by four.
{Coccyx} (prompt on “Tailbone” before given)