The sacral spinal cord is the lower part of the spinal cord, located in the sacrum, which is a triangular bone at the base of the spine. It consists of five segments, labeled S1 to S5, and is responsible for transmitting nerve signals between the brain and the lower body. This region plays a crucial role in controlling functions such as bladder and bowel control, as well as sexual function. The sacral spinal cord is part of the central nervous system and connects to various nerves that extend to the legs and pelvic organs. Damage to this area can lead to loss of sensation or motor control in the lower body, highlighting its importance in overall mobility and bodily functions.