Funiculus (neuroanatomy)

A funiculus is a small bundle of axons (nerve fibres), enclosed by the perineurium. A small nerve may consist of a single funiculus, but a larger nerve will have several funiculi collected together into larger bundles known as fascicles. Fascicles are bound together in a common membrane, the epineurium.

Funiculi in the spinal cord are columns of white matter. Examples include:

• Anterior funiculus of the spinal cord
• Lateral funiculus of the spinal cord
• Posterior funiculus of the spinal cord