BIO 201 Chapter 13: Spinal Cord and Nerves

From medulla oblongata to second lumbar vertebra

Length of spinal cord

Conus medullaris

End of spinal cord

Filum terminale

Extension of Pia mater

Epineurium

outer covering of spinal and cranial nerves

Dura mater

superficial

composed of dense irregular connective tissue

continuous with epineurium

Subdural space

between dura mater and arachnoid mater

contains interstitial fluid

Arachnoid mater

middle

composed of collagen and elastin

Subarachnoid space

between arachnoid mater and pia mater

contains cerebrospinal fluid

Pia mater