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NEUROANATOMY<br />
Spinal Nerve Origin: Cross Sections<br />
Section through thoracic vertebra<br />
Aorta<br />
Fat in epidural space<br />
Sympathetic ganglion<br />
Ventral root<br />
White and gray rami<br />
communicantes<br />
Spinal nerve<br />
Ventral ramus<br />
(intercostal nerve)<br />
Dorsal ramus<br />
Body of vertebra<br />
Dura mater<br />
Arachnoid mater*<br />
Subarachnoid space<br />
Pia mater*<br />
Recurrent<br />
meningeal<br />
branches of<br />
spinal nerve<br />
Pleura<br />
Lung<br />
Spinal sensory<br />
(dorsal root) ganglion<br />
Dorsal root<br />
Lateral horn of<br />
gray matter of spinal cord<br />
Section through lumbar vertebra<br />
Sympathetic<br />
ganglion<br />
Dura mater<br />
Lateral branch<br />
Medial branch<br />
of dorsal<br />
ramus<br />
of spinal<br />
nerve<br />
Gray ramus<br />
communicans<br />
Fat in<br />
epidural<br />
space<br />
Arachnoid mater<br />
Ventral root<br />
Spinal nerve<br />
Internal vertebral<br />
(epidural) venous plexus<br />
Ventral ramus (contributes to lumbar plexus)<br />
Dorsal ramus<br />
Dorsal and ventral<br />
roots of lumbar and<br />
sacral spinal nerves<br />
forming cauda equina<br />
Spinal sensory (dorsal root) ganglion<br />
Dorsal root<br />
Conus medullaris<br />
*Leptomeninges<br />
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