👉 Colpium, also known as a colliptic or colpicoid, is an anatomical term used in medical terminology to describe the location of the umbilicus, which is located at the base of the spine and connects the lower back to the front. It's usually associated with the spinal cord, but it can extend further down the spine to reach various structures such as the sacrum (lower pelvis), ilium (upper pelvis), and mesentery (outermost part