1. located or occurring before a ganglion, especially referring to nerve fibers that extend from the central nervous system to a ganglion
Usage: medical; anatomy

Examples

• The preganglionic neurons originate in the brainstem and spinal cord.
• Preganglionic fibers release acetylcholine at the ganglion.
• The preganglionic axons are typically myelinated.
• Damage to preganglionic neurons can affect autonomic function.
• The preganglionic sympathetic fibers emerge from the thoracic spinal cord.
• Preganglionic parasympathetic neurons are located in specific cranial nerve nuclei.