vertebral foramen part 4 ex. 1 QQ Flashcards
what is the typical shape/outline of the vertebral foramen at each region of the spinal column/ vertebral column?
cervical- triangle
thoracic- oval
lumbar- triangle
sacrum- triangle
what vertebral level will the spinal cord typically terminate?
L1
what vertebral level will the dural sac typically terminate?
S2
which of the segmental arteries will arise from the internal iliac artery?
iliolumbar and lateral sacral arteries
identify all the segmental arteries (10)
Vertebral- C Ascending Cervical- C Deep Cervical- C,T Posterior Intercostal-T Superior Intercostal- T Subcostal- T Median Sacral-L Iliolumbar-L Lateral Sacral-L Lumbar-L
what are the segmental arteries of the cervical spine?
vertebral artery
ascending cervical artery
deep cervical artery
VAD
what are the segmental arteries of the thoracic spine?
deep cervical
superior intercostal
posterior intercostal
subcostal
DSPS
what are the segmental arteries of the lumbar spine?
Median Sacral
Iliolumbar
Lateral Sacral
Lumbar
MILL
what are the segmental arteries of the 5th lumbar vertebra and the sacrum?
iliolumbar
lateral sacral
median sacral
which vertebra has the greatest number of segmental arteries associated with it?
L5
what branch of the segmental artery supplies the vertebra and paravertebral region?
dorsospinal artery
which artery is primarily observed in the distal part of the intervertebral foramen?
spinal artery
what are the branches of the spinal artery?
Osseous Anterior Spinal Canal Posterior Spinal Canal Anterior Medullary Feeder Posterior Medullary Feeder Anterior Radicular Posterior Radicular
which branches of the spinal artery supply the contents of the epidural space?
osseous
anterior spinal canal
posterior spinal canal
what arteries are observed in the epidural space near the PLL?
anterior spinal canal artery and plexus
what arteries are observed in the epidural space near the ligamentum flavum?
posterior spinal canal artery and plexus
which branches of the spinal artery supply the contents of the subarachnoid space?
anterior radicular
posterior radicular
anterior medullary feeder
posterior medullary feeder
which vessel will supply the ventral/anterior nerve rootlet and nerve root?
anterior radicular artery
which vessel will supply the dorsal/posterior nerve rootlets, nerve root and nerve root ganglion?
posterior radicular artery
which artery is now said to enlarge and form the medullary feeder artery?
radicular artery
what is the location and number of medullary feeder arteries present in adults?
9 anterior and 12 posterior medullary feeder
the anterior spinal artery is a branch of which artery?
vertebral artery
is the anterior spinal artery a single, continuous artery along the spinal cord?
no
as the anterior spinal artery continues along the spinal cord which arteries unite along its length to give the appearance of a single continuous vessel?
anterior medullary feeder arteries
the posterior spinal artery is a branch of which artery?
posterior inferior cerebellar artery
what is the position of the posterior spinal artery relative to the spinal cord?
it lies in the posterolateral sulcus along the spinal cord
as the posterior spinal artery continues along the spinal cord, which arteries unite along its length to give the appearance of a single continuous vessel?
posterior medullary feeder arteries
what forms the arterial vasa corona above C3?
right and left anterior spinal arteries
right and left posterior spinal arteries
4 communicating arteries
what forms the arterial vasa corona below C6?
a median anterior spinal artery
right and left posterior spinal arteries
3 communicating arteries
what is the generic name given to arteries that penetrate the spinal cord?
intramedullary arteries
what are the intramedullary branches of the arterial vasa corona?
pial perforating arteries and central/sulcal perforating arteries
what artery gives off the ventral/central/sulcal perforating arteries?
anterior spinal artery
what arteries are responsible for supplementing the arterial vasa corona along the cord?
anterior medullary feeder
posterior medullary feeder
what vessels drain the spinal cord?
pial veins
what will pial veins drain into?
venous vasa corona
which vessels form the venous vasa corona?
right and left anterior longitudinal
right and left posterior longitudinal
4 communicating
which vessels will drain the venous vasa corona?
anterior medullary
posterior medullary
which vessels will drain the ventral/anterior nerve roots?
anterior radicular
which vessel will drain the dorsal/posterior nerve root ganglion?
posterior radicular
what 9 veins will lie in the subarachnoid space?
Pial Venous vasa corona Communicating Anterior longitudinal Posterior longitudinal Anterior medullary Posterior medullary Anterior radicular Posterior radicular
what veins are observed in the epidural space near the posterior longitudinal ligament?
anterior internal vertebral venous plexus
basivertebral
what veins are observed in the epidural space near the ligamentum flavum?
posterior internal vertebral venous plexus
what venous vessels are identified in the intervertebral foramen?
intervertebral veins
