Dorsal root ganglion Posterior median sulcus Gray matter

Dorsal root ganglion Posterior median sulcus Gray matter Central canal White matter Ventral root Spinal nerve Anterior median fissure

Posterior median sulcus Dorsal root ganglion Spinal nerve Central canal Anterior median fissure Ventral root Gray matter White matter

Copyright © The Mc. Graw-Hill Companies, Inc. Permission required for reproduction or display. Spinal cord Ventral root Dorsal root Spinal nerve Dorsal root ganglion Pia mater Arachnoid mater Dura mater

Spinal cord Copyright © The Mc. Graw-Hill Companies, Inc. Permission required for reproduction or display. Spinous process Ventral root Dorsal root Spinal nerve Dorsal root ganglion Subarachnoid space Pia mater Arachnoid mater Epidural space Dura mater Dorsal root Spinal nerve Dorsal root ganglion Spinal cord Ventral root Epidural space (a) (b) Body of vertebra

Posterior Spinous process of vertebra Epidural space Denticulate ligament Dura mater Spinal nerve Subdural space Arachnoid mater Subarachnoid space Pia mater Body of vertebra Anterior Cross section of vertebra and spinal cord

White matter Gray matter Posterior median sulcus Central canal Anterior median fissure Pia mater Dorsal root ganglion Spinal nerve Ventral root Subarachnoid space Arachnoid mater Subdural space Dura mater Anterior view

Dura mater Subdural space Epidural space Subarachnoid space Denticulate ligaments Pia mater Arachnoid mater

Spinous process White matter Posterior median sulcus Central canal Dorsal root Anterior median fissure Dorsal root ganglion Ventral root Spinal nerve Body of vertebra

Conus medullaris Cauda equina