Spinal Chord Flashcards
Two longitudinal depressions
Posterior median sulcus
Anterior median fissure
Tapering inferior end of the spinal chord
Conus medullaris
Projecting out of conus medullaris are group of axons that form
Cauda equina
Thin strand of pia mater that travels in cauda equina
Filum terminale
The difference between brain and spinal meninges
More true space
Between dura mater and boeny vertebrae
Epidural mater
Only a potential space
Subdural mater
True space, filled with csf
Subarachnoid space
Between the dues matter and inner walls of vertebrae
Epidural space
Fuses with connective layers that surround spinal nerves
Dura mater
Potential space
Subdural mater
Deep to Subdural space
Arachnoid mater
True space filled with csf
Subarachnoid space
Adheres directly to spinal chord
Pia mater
Collections of spinal tract in white mater
Funiculi
Joins two anterior funiculi
White mater
Joins two sides and central canal in middle
Grey matter
Form motor axons from anterior root, motor
Anterior rootlets
Arise from a single posterior root, sensory
Posterior rootlet
Where do c1-c7 axons exit
Above the vertebrae of their same number
Where does c8 axon exit
Under c7 vertebrae
Posterior ramus innervates
Back skin and muscles (ant lat)
Anterior ramus innervates
Trunk and appendages (ant lat)
Many of the anterior rami form
Nerve plexus
Anterior rami of spinal nerves t1-t11 form
Intercostal nerves
T12 forms what nerve
Subcostal nerve
