Flashcards in Intervertebral Foramen: General Characteristics, Contents, Regional Characteristics, and Sources of Nerve Compression Deck (25)
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1
What percent of total vertebral column length does "true" intervertebral foramina height from C2-S1 equal?
40%
2
What percent of total vertebral column length does all intervertebral foramina height from occiput-Co1 equal?
53%
3
What are the segmental arteries of the cervical spine?
The vertebral artery, ascending cervical artery, and deep cervical artery
4
What are the segmental arteries of the thoracic spine?
The deep cervical artery, highest (superior) intercostal artery, posterior intercostal artery, and subcostal artery
5
What are the segmental arteries of the lumbar spine?
The lumbar arteries, iliolumbar artery, lateral sacral artery, and median sacral artery
6
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
7
What will the intervertebral veins drain into?
The external vertebral venous plexus or Batson's plexus
8
What is a unique histological feature of the veins of the vertebral column?
They appear to lack valves
9
What increases the depth or length of the intervertebral foramen in the cervical spine?
The transverse process
10
What is the location of the spinal nerve within the cervical intervertebral foramen?
Toward the front and middle of the height of the cervical intervertebval foramen
11
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 cor, but the cross-sectional area of the nerve root decrease
12
What is the relationship between aging and cervical spine intervertebral foramen size?
The cross-sectional area diminishes after 50
13
What are the specific attachment sites for a cervical spinal nerve?
The sulcus for the ventral primary ramus on the costotransverse bar and the vertebral artery
14
What contributes to the anterior boundary of the thoracic intervertebral foramen?
The costocentral joint
15
Which are the largest spinal nerves?
L5 and S1 spinal nerves
16
What increases the length of the intervertebral foramen at L5?
The lumbosacral tunnel
17
What forms the lumbosacral tunnel?
The lumbosacral ligament, transverse process of L5, and sacral ala
18
What condition is the result of encroachment of the L5 spinal nerve?
The far out syndrome
19
What ligament may contribute to the loss of size in the lumbar intervertebral foramen?
The transforaminal ligament
20
What is unusual about the sacral intervertebral foramen compared to other intervertebral foramina?
A completely osseous boundary exists
21
What is the unique about the relationship of spinal nerve to intervertebral foramen at S5-Co1?
There are two nerves present, S5 nerve and Co1 nerve
22
What are some examples of destructive lesions of the vertebral body?
Tuberculosis, hemangiomas, osteoporosis
23
What may reduce the impact of intervertebral disc loss of integrity on the intervertebral foramen in the cervical and thoracic spine?
The joint of Luschka in the cervicals, the costocentral joint in the thoracics
24
What are examples of osteophyte formation that influence the intervertebral foramen?
The bony spurs of the vertebral body and para-articular processes on the lamina
25
