spinal cord and blood supply of cns Flashcards
spinal meninges list
- dura mater
- arachnoid mater
- pia mater
is the spinal extradural space a potential or genuine space
geniune space
synonym for extradural space
epidural space
the spinal cord ends at …
the vertebrae level L1/L2
the spinal subarachnoid space ends at …
the vertebrae level S1/S2
lumbar cistern
the part of the spinal subarachnoid space that extends below the spinal cord
cauda equina
nerve roots traveling from the spinal cord to the intervertebral foramina below the vertebrae level L2
where does the cauda equina lie
in the lumbar cistern
spinal pia mater features
- linea splendens
- ligament denticula
- filum terminale
where do the anterior nerve rootlets emerge from
anterolateral sulcus
anterior nerve roots parts
- anterior nerve rootlets
- anterolateral sulcus
where do the posterior nerve rootlets emerge from
posterolateral sulcus
posterior nerve roots parts
- posterior nerve rootlets
- posterolateral sulcus
spinal nerve parts
anterior and posterior nerve roots
where do anterior and posterior nerve roots unite to become spinal nerves
intervertebral foramen
the Wiegert stain dyes …
myelin and reflects the thickness of the myelin sheath around the nerve
are the posterior columns highly myelinated
yes
are the spinocerebellar tracts highly myelinated
yes
are the spinothalamic tracts highly myelinated
no
blood supply of the spinal cord
anterior and posterior spinal arteries
artery of Adamciewicz
the only major arterial supply supplying the anterior spinal artery along the lower thoracic, lumbar, and sacral segments of the spinal cord
clinical significance of the artery of Adamciewicz
- injury to this artery can cause neurologic damage (fecal and urinary incontinence, impaired motor function)
- sensory function is usually preserved
dura mater
arachnoid mater
