Vertebral Column Pp

8/18/2019 Vertebral Column Pp

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Vertebral Column


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Vertebral Column

• Part of the axial skeleton• Consists of 26 irregular bones

• 24 vertebrae, sacrum, coccyx• Vertebral column divisions

– Cervical C !C"

– #horacic # !# 2 – $umbar $ !$% – &acrum & !&%'fused(


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&)inal curvatures

• Cervical and lumbar curves are secondarycurves

•*evelo) after birth• #horacic and sacral curves are )rimarycurves

• +))ear during fetal develo)ment• verall curve of the s)ine is & sha)ed


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Vertebral +natomy

• +ll vertebrae have a common structural )lan• &tructural features are-

– Vertebral body

– Vertebral arch – Vertebral foramen – Pedicles – $amina – +rticular )rocesses, su)erior and inferior – &)inous )rocess


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Cervical Vertebrae

• C !C"• &mallest vertebrae• &mall vertebral body

• #riangular sha)ed vertebral foramen• &mall s)inous )rocess that is usually notched at

the end – bifid )rocess• +$$ cervical vertebrae have a transverse

foramen• C is called the +#$+&• C2 is called the +./&


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C ! +#$+&


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C2 ! +./&


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C !C2 +rticulation


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#horacic Vertebrae

• # !# 2• $arger vertebral body

• val vertebral foramen• &)inous )rocess )ro0ects )osterocaudally• # !#1 vertebrae have su)erior and inferior

costal facets for rib articulation• # !# have transverse costal facets for

articulation of tubercles of the ribs


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$umbar Vertebrae

• $ !$%• $argest vertebrae• $arge body• 3o articular facets on the body or

transverse )rocesses• #riangular vertebral foramen• &hort, flat s)inous )rocess• eight bearing vertebrae


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#horacic Cage

• Consists of the – #horacic vertebrae – 8ibs, 2 )air – &ternum – 8ibs !" are true ribs, vertebrosternal – 8ibs 1! 2 are false ribs, vertebrochondrial, do

not attach directly to the sternum – 8ibs ! 2 are called floating ribs, 3

connection to sternum


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8ib articulation to thoracicvertebrae


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5eatures of a ty)ical rib


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&ternum

• 5lat bone that forms the midline of thethoracic 9all

• #hree com)onents – 7anubrium – articulates 9ith the clavicles and

costal cartilages of 8 – 7anubrium has the 0ugular notch on the

su)erior surface – :ody of sternum, articulation of ribs 2!" – .i)hoid )rocess


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Vertebral Column Pp

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