plexus/maters

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3 maters that protect spinal cord and brain and hold in CSF
- 1) Dura-outtermost layer
- 2)Arachnoid-middle layer
- 3)Pia-inner layer
Subarachnoid space purpose

circulates CSF
epidural space contains what tissue?

loose areolar connective tissue
cervical enlargment

attaches the large nerves which supply the upper limbs
lumbosacral enlargement

gives attachment to the nerves which supply the lower limbs.
conus medullaris

end of spinal cord
cervical plexus

*phrenic nerve-derives from accessory nerve
brachial plexus
- *musculo-cut-aneous
- *axillary
- *ulnar
- *median
- *radial
lumbar plexus

*femoral
sacral plexus
- *sciatic-originates in lumbosacral plexus
- *common fibular (peroneal)
- *tibial