HSF/Structure lists/Vertebral canal, spinal cord, and meninges
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< HSF
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Spinal cord features
- Cervical enlargement
- C4-T1; supplies the upper limb
- Lumbar enlargement
- Gives rise to spinal nerves L2-S3; supplies the lower limb
- Located T9-L1
- Conus medullaris
- End of spinal cord between L1 and L2
- Cauda equina (horse's tail)
- Ventral and dorsal roots and filum terminale in lower vertebral canal S4-C0
- Filum terminale internum
- Delicate filament continuous with pia mater, extends from conus medullaris to S2, and is completely enclosed in the dural sac (the sac ends at S2, which is why the filum terminale internum ends there too)
- Filum terminal externum
- Continuation of the filum terminale internum extending from S2 and ending by attaching to the coccyx.
