Which ligament provides proprioceptive information to the spinal cord?

Which ligament provides proprioceptive information to the spinal cord?

• A. Anterior longitudinal ligament
• B. Supraspinous ligament
• C. Interspinous ligament
• D. Ligamentum flavum

Answer: (C)

Proprioception from spinal ligaments comes from mechanoreceptors that provide the brain with information about joint position and movement. The interspinous ligament, which spans between adjacent spinous processes, is rich in these receptors and detects how far apart the processes are as you move. That feedback tells the spinal cord about the exact segmental position, helping coordinate reflexes and stabilize the spine during flexion and other motions. The other ligaments do have receptors, but the interspinous ligament is especially oriented to signaling vertebral separation and angle, making it the primary source of proprioceptive information in this context.

Proprioception from spinal ligaments comes from mechanoreceptors that provide the brain with information about joint position and movement. The interspinous ligament, which spans between adjacent spinous processes, is rich in these receptors and detects how far apart the processes are as you move. That feedback tells the spinal cord about the exact segmental position, helping coordinate reflexes and stabilize the spine during flexion and other motions. The other ligaments do have receptors, but the interspinous ligament is especially oriented to signaling vertebral separation and angle, making it the primary source of proprioceptive information in this context.