👉 Preganglionic is a medical term used to describe the nerve roots that originate from the spinal cord and terminate in the perineal, or pelvic, muscles of the lower extremities. These nerves are primarily responsible for transmitting sensory information from the brain to the muscles, which then send impulses back down to the spinal cord. The term "preganglionic" refers to the fact that these nerve roots originate on the side of the spine closest to the midline and terminate in the per
