Flashcards in Vertebral Column/Spinal Column (Vertebral Foramen) Deck (46)
What name is given to the opening located within the vertebral body-vertebral arch enclosure?
The vertebral foramen
What is the name given to the union of all vertebral foramina into an apparent vertical cylinder?
The vertebral canal or spinal canal
What is the typical shape/outline of the vertebral foramen at each region of the spinal column/vertebral column?
Cervical- triangular; thoracic- oval; lumbar- triangular; sacrum- triangular
What are the segmental arteries?
The arteries whose branches supply the vertebra or segment
What are the segmental arteries of the cervical spine?
The vertebral artery, ascending cervical artery, and deep cervical artery
What are the segmental arteries of the thoracic spine?
The deep cervical artery, superior (highest) intercostal artery, posterior intercostal artery and subcostal artery
What are the segmental arteries of the lumbar spine?
The lumbar arteries, iliolumbar artery, lateral sacral artery and median (middle) sacral artery
What are the segmental arteries of the fifth lumbar vertebra?
The iliolumbar artery, lateral sacral artery, and median (middle) sacral artery
What are the segmental arteries of the sacrum?
Lateral sacral artery and median (middle) sacral artery
Which branch of the dorsospinal artery will penetrate the meninges to enter subarachnoid space?
What are the branches of the spinal artery?
Osseous arteries, anterior spinal canal artery, posterior spinal canal artery, anterior medullary feeder artery, posterior medullary feeder artery, anterior radicular artery, posterior radicular artery
What arteries are observed in the epidural space near the posterior longitudinal ligament?
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 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
What is the name given to the artery which lies in front of the spinal cord along its length?
Anterior spinal artery
The anterior spinal artery is a branch of which artery?
The vertebral artery
Is the anterior spinal artery a single, continuous artery along the spinal cord?
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?
The 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
What forms the arterial vasa corona above C3?
Right and left anterior spinal arteries, right and left posterior spinal arteries,m and 4 communicating arteries
What forms the arterial vasa corona below C6?
A median anterior spinal artery, right and left posterior spinal arteries, and 3 communicating arteries
What are the intramedullary branches of the arterial vasa corona?
Pial perforating arteries, central/ventral/sulcal perforating arteries
What arterial vasa corona branches supply gray matter and most of the spinal cord?
Ventral/central/sulcal perforating arteries
What is the primary artery supplementing the arterial vasa corona?
Anterior medullary feeders and posterior medullary feeders
What vessels drain the spinal cord?
What will pial veins drain into?
Venous vasa corona
Which vessels form the venous vasa corona?
Right and left anterior longitudinal veins, right and left posterior longitudinal veins, and 4 communicating veins