Cauda equina is damage to what structures?

Cauda equina is damage to what structures?

• A. Spinal cord tracts
• B. Collection of nerve roots
• C. Brainstem nuclei
• D. Spinal nerves within the spinal canal above the conus

Answer: (B)

Cauda equina refers to the collection of dorsal and ventral nerve roots that descend within the dural sac after the spinal cord ends. In adults, the spinal cord typically terminates around the L1–L2 level, so below that point the nerve fibers continue as multiple roots that resemble a horse’s tail. These nerve roots carry motor and sensory information to and from the lower limbs and pelvic organs, making this structure the target of cauda equina pathology. This is distinct from spinal cord tracts, which stay inside the spinal cord itself, and from brainstem nuclei, which reside in the brainstem. It’s also specifically about the roots below the conus medullaris, not the spinal nerves that are still within the canal above that level.

Cauda equina refers to the collection of dorsal and ventral nerve roots that descend within the dural sac after the spinal cord ends. In adults, the spinal cord typically terminates around the L1–L2 level, so below that point the nerve fibers continue as multiple roots that resemble a horse’s tail. These nerve roots carry motor and sensory information to and from the lower limbs and pelvic organs, making this structure the target of cauda equina pathology. This is distinct from spinal cord tracts, which stay inside the spinal cord itself, and from brainstem nuclei, which reside in the brainstem. It’s also specifically about the roots below the conus medullaris, not the spinal nerves that are still within the canal above that level.