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Neuro Atlas

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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 />

24

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