spine Flashcards
how many of each vertebrae
C - 7 T - 12 L - 5 sacral - 5 coccygeal - 4
cervical vertebrae features
bifid spinous process
thoracic vertebrae features
heart shaped body
long sloping spinous process
lumbar vertebrae features
big kidney shaped body
short and sturdy spinous process
facet joints
synovial plane joints
between superior and inferior articular processes of adjacent vertebrae
spinal nerves how many
31 pairs
8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccygeal
where does spinal cord end
L2 - tapering end = conus medullaris
cauda equina
2 points of enlargement spinal cord
cervical: C4-T1
lumbar: t11-L1
what to meninges form distally
filum terminale
attaches to vertebral bodies of coccyx to anchor spinal cord + meninges
layes meninges
dura
arachnoid
pia matter
posterior rami
nerve fibres to synovial joints vertebral bodies, deep muscles of back and skin
smaller
anterior rami
motor and sensory
much of body
bigger
arterial supply spinal cords
anterior spinal artery
paired posterior spinal artery
branches vertebral arteries (or for pos, posteroinferior cerebellar artery)
what does epidural space contain
between wall of vertebral canal and dura matter
epudiral fat, venous plexuses,
subarachnoid space
between arachnoid and pia matter
CSF, arachnoid trabeculae, spinal arteries
