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16 Cards in this Set

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  • Back
How many vertebrae exist?
What's the breakdown?
33 vertebrae:
7 cervical
12 thoracic
5 lumbar
5 sacral
4 coccyx
How many spinal cord nerves exist?
What's the breakdown?
31 spinal cord nerves:
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccyx
What are the characteristics of a cervical vertebrae?
Size= small
Large triangular vertebral foramen
Spinous process bifurcates-- (exception= C1/C7)
What is special about the atlas?
Contains no spinous process or vertebral body
What is special about the axis?
Strongest cervical vertebrae
Contains a dens- protrudes through C1 (atlas)
What are the characteristics of a thoracic vertebrae?
Small heart-shaped vertebral foramen
Costal facets for ribs
Spinous process slopes posteroinferiorly
What are the characteristics of a lumbar vertebrae?
Large vertebral body
Triangular vertebral foramen
Spinous process short&sturdy
What are the characteristics of sacrum and coccyx?
Region is fused
Spinal nerves exit sacral foramen
What is scoliosis?
Lateral bend in spine
What is kyphosis?
Accentuated curve in thoracic region-- "humpback"
What is lordosis?
Curve in lumbar region (L for lordosis and lumbar)
What are the 3 levels of the spinal cord?
L2: end of spinal cord; conus medullaris
S2: end of dural sac
C2: end of filum terminale externum
What are the spinal meninges and associated spaces (outer to inner-most layer)?
Dura mater
Subdural space
Arachnoid mater
Subarachnoid space
Pia mater
Where is cerebrospinal fluid (CSF) located?
Subarachnoid space within the lumbar cisternae
How is CSF extracted?
Through lumbar puncture performed at L4-level (+-1) inserting needle into subarachnoid space;
L4-level found by palpating for iliac crest
Name each structure
1. Vertebral Body 2. Pedicle 3. Transverse process 4. Arch 5. Spinous process 6. Lamina 7. Superior articular facet 8. Superior articular process 9. Vertebral foramen