III4 - sacrum E. coccygeal * 3/5 bones fused to form coccyx...

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The Axial Skeleton III. Identifying Characteristics of Different Vertebrae A. cervical * C1 (atlas) no body, no spine * C2 (axis) bifid spine, dens (head) * C3-6 bifid spine * C7 non-bifid spine, bulges from lower neck * transverse foramen (vessel+nerve) * largest vertebral foramen (down->smaller) B. thoracic * T1 sup. whole facet : inf. demifacet * T2-8 two demifacets; sup. large/inf. small * T9 single superior demifacet * T10-12 whole facet for individual rib * long, inferior-directed spinous processes * transverse processes are long and heavy C. lumbar * all have largest, thickest bodies * spinous processes are oblong and heavy D. sacral * 5 bones fused at middle age to form
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Unformatted text preview: sacrum E. coccygeal * 3/5 bones fused to form coccyx IV. Intervertebral Disc A. Functions 1. absorb stress/shock on the vertebral column 2. provide surface for vertebra to twist B. Structure 1. annulus fibrosus- outer ring of fibrocartilage 2. nucleus pulposus- inner structure, highly elastic C. Herniated Disc 1. nucleus pulposus ruptures through the fibrocartilage 2. generally ruptures at L3-5 (lower back slipped disc) 3. most often occurs in posterior direction 1 The Axial Skeleton 4. can compress spinal nerves and spinal cord V. Don't Forget That FLASHCARDS Can Save You Time and Energy!!! 2...
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This note was uploaded on 01/29/2012 for the course SCIE SYG2000 taught by Professor Bernhardt during the Fall '10 term at Broward College.

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III4 - sacrum E. coccygeal * 3/5 bones fused to form coccyx...

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