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 movement and sensation in the legs and pelvic organs. In addition to its role in motor and sensory functions, the sacral spinal cord is involved in autonomic functions, including bladder and bowel control. It connects to various nerves that extend to the lower limbs and pelvic area, facilitating communication between the central nervous system and these regions.