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Spinal Cord and Vertebral Canal - UNC MS1 Anatomy
Spinal Cord and Vertebral Canal
21
Anatomy
Graduate
10/23/2011

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Cards

Term
how far does the spinal cord extend?
Definition
~L2
Term
in what back region are the spinal nerves the longest?
Definition
lumbar and sacral/coccygeal
Term
how far does the dural sac extend?
Definition
~S2
Term
conus medullaris
Definition
end of the spinal cord
Term
internal filum terminale (position)
Definition
extends from medullary cone to the tip of the dural sac
Term
external filum terminale
Definition
extends from tip of dural sac to the sacrum/coccyx
Term
what makes up the spinal meninges?
Definition
dura, arachnoid, and pia mater
Term
dura mater blends with what of the spinal nerve?
Definition
epineurium (outer covering)
Term
recurrent meningeal nerves
Definition
nerves that arise directly from the spinal nerve and convey sensory info from the dura mater
Term
what is in the subarachnoid space? (4)
Definition
CSF, spinal cord, nerve roots, DRG
Term
denticulate ligaments
Definition
lateral extensions of pia mater in between dorsal and ventral roots, which help anchor the cord laterally
Term
epidural space (position)?
contains?
Definition
between vertebral canal and dura mater
adipose and the internal (epidural) venous plexus
Term
basivertebral vein?
Definition
drains blood from vertebral body and into the internal plexus
no valves!
site for metastatic bone cancer
Term
caudal epidural block (what and where)?
Definition
anesthesia injected in the epidural space of the sacrum
blocks lumbar and sacral nerve roots
Term
name the arteries of the spinal cord (6)
Definition
vertebral arteries, ascending cervical arteries, deep cervical arteries, intercostal arteries, lumbar arteries, lateral sacral arteries
Term
vertebral arteries (pass through and attach to)?
Definition
pass through cervical intervertebral foramina and attach to subclavian arteries
Term
feeder (helper) vessels enter through?
name of other spinal cord artery branches and what they arise from?
Definition
IV foramen
longitudinal vessels (anterior spinal artery and two posterior spinal arteries; arise from vertebral arteries)
Term
list the artery pathway of the spinal cord starting with the aorta (3)
Definition
Term
artery of Adamkiewicz?
AKA?
Definition
largest segmental medullary artery
AKA great anterior segmental artery
Term
supraspinous ligament (position)
Definition
connects spinous processes from sacrum to C7 (ligamentum nuchae starts here)
Term
top point of the ligamentum nuchae?
Definition
external occipital protuberance
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