Nervous IV-Spinal Cord

Dorsal Column

White matter (dorsal)

Myelinated axons

Lateral column

White matter (lateral)

Myelinated axons

Ventral Column

White matter (ventral)

Myelinated axons

Anterior white commissure

white matter (anterior white commissure)

Myelinated axons

Dorsal horn (gray matter)

Sensory cell bodies

Lateral horn (gray matter)

autonomic cell bodies (preganglionics)

Ventral horn (gray matter)

motor cell bodies

Gray commissure

connects left and right sides of gray matter

Central canal

transport of CSF and protective cushion of spinal cord

Dorsal median sulcus

separates dorsal columns

Ventral median fissure

divides spinal cord into symmetrical halves

Dorsal root

sensory nerves

Dorsal root ganglion

sensory nerve cell bodies

Ventral root

motor nerves

Spinal nerve (peripheral)

Mixed nerves (both motor & sensory nerves)