Day 14 Flashcards
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, highest (superior) inter coastal artery, posterior intercostal artery and subcostal artery
What are the segmental arteries of the lumbar spine?
the lumbar arteries, iliolumbar artery, lateral a sacral artery and median sacral artery
What are the characteristics of the Artery of Adamkiewicz?
it is a left side, anterior medullary feeder artery, located in the T9/T10 intervertebral foramen, and the primary vascular supply to the lumbar enlargement
What will the intervertebral veins drain into?
the external vertebral venous plexus or Batson’s plexus
What is the unique histological feature of the veins of the vertebral column?
they appear to lack valves
What increases the depth of length of the intervertebral foramen in the cervical spine?
the transverse process
What is the location of the spinal nerve within the cervical intervertebral foramen?
toward the front and middle of the height of the cervical intervertebral foramen
What is the relationship between aging and cervical spine nerve root characteristics?
the length of the nerve root increases as it descends from its apparent origin on the spinal cord, but the cross-sectional area of the nerve root decreases
What is the relationship between aging and cervical spine intervertebral foramen size?
the cross-sectional area diminishes after age 50
What are the specific attachment sites for a cervical spinal nerve?
the sulcus for the ventral primary ramus on the costotransverse bar & the vertebral artery
What contributes to the anterior boundary of the thoracic intervertebral foramen
the costocentral joint
Which are the largest spinal nerves?
L5 and S1 spinal nerves
What increases the length of the intervertebral foramen at L5?
the lumbosacral tunnel
What forms the lumbosacral tunnel?
the lumbosacral ligament, transverse process of L5 and sacral ala
