Answer:
The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the base of the brain down through the vertebral canal of the spinal column. It serves as the main pathway for transmitting nerve signals between the brain and the rest of the body, allowing for communication between the central nervous system and the peripheral nervous system. The spinal cord plays a crucial role in controlling reflexes and facilitating voluntary movements, as well as transmitting sensory information such as pain, temperature, and touch to the brain for processing.