Term
| How many bones are present before fusion? |
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Definition
| 33- 7 cervical, 12 thoracic, 5 lumbar, 5 sacral, 4 coccyx |
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Term
| How many bones are present after fusion? |
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Definition
| 26- 7 cervical, 12 thoracic, 5 lumbar, 1 sacrum, 1 coccyx |
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Term
| How many cervical vertebra are there? |
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Definition
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Term
| How many thoracic vertebra are there? |
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Definition
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Term
| How many lumbar vertebra are there? |
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Definition
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Term
| How many sacral vertebrae are there? |
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Definition
5 fused vertebare (before)
1 (after) |
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Term
| How many coccyx vertebrae are there? |
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Definition
4 fused (before)
1 (after) |
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Term
| What curve is present in fetus? |
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Definition
| one primary curvature; concave anteriorly due to diff in height of btw ant and post aspect of vertebra. |
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Term
| Function of the vertebral column? |
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Definition
| posture, support of weight, protection of the SC and spinal nerves, and partial protection for thoracic and abdominal organs. |
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Term
|
Definition
primary- thoracic and sacrum
secondary- cervical and lumbar (due to height diff in IV discs) |
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Term
| How is secondary curvature formed? |
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Definition
1. in the cervical, when baby tries to lift head.
2. in lumbar, when child goes from crawling to walking. |
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Term
| What are the characteristics of typical vertebrae? |
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Definition
| body, vertebral arch (pedicles + lamina), vertebral foramen = vertebral canal, spinous processes, tranvserse provesses, sup/inf articular processes, and vertebral nothces. |
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Term
|
Definition
| vertebral column is not fully developed which leads to protrusion of spinal cord. Folic acid can help! |
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Term
| Characteristics of cervical vertebrae? |
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Definition
transverse formaen (vertebral a. and vein except for C7 - only the vein)
bifid SP
bifid TP - ant/post tubercles
large, triangular vertebral foramen
thin lamina
uncovertebral joints
shape of vert. body |
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Term
|
Definition
no body- replaced by dens of C2
no SP or laminae - replaced by post arch of C1
Sup articular processes- concave with occ condyles |
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Term
|
Definition
dens process
thickest lamina - attachment of lig flavum |
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Term
|
Definition
most prominent SP
Does not bifuricate
small transverse foramen- only vertbral vein |
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Term
| Characteristics of thoracic vert. |
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Definition
facets on TP to articulate with the ribs
has costotransverse joint and costovertebral joints.
NO foramina on TP |
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Term
| Characteristics of lumbar vert. |
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Definition
much larger
quadrangular SP
mammilary processes and accessory processes
no foramina/facets in TP
increase in size going from cervical to lumbar (support weight)
after lumbosacral, decreases in size (no support) |
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Term
| Characteristics of sacral vert |
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Definition
two surfaces: pelvic and dorsal
pelvic foramina -ventral rami of S1-S4
dorsal- median sacral crest, dorsal sacral foramina for dorsal rami of S1-S4 and sacral hiatus. |
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