The spinal cord is a long bundle of nervous tissue extending from the brainstem that carries signals between the brain and the rest of the body and coordinates many reflexes.
Protected by the vertebral column, the spinal cord contains nerve pathways that transmit sensory information toward the brain and motor commands toward the body. It also contains neural circuits capable of producing some rapid reflex responses without requiring conscious processing by the brain.
Damage to the spinal cord can disrupt these signals, leading to weakness, loss of sensation, disruption of movement and autonomic functions, or paralysis below the level of injury.
QUICK FACT
- Within the vertebral canal, the spinal cord is protected by three layers of meninges and surrounded by cerebrospinal fluid (CSF).
- In most adults, the spinal cord is approximately 17–18 inches (43–45 cm) long.
SEE ALSO
- Brain
- Nervous System
- Neuron
- Paralysis
- Central Nervous System
- Meninges
- Meningitis
- Vertebral Column
