CHP8 The Skeletal System

Bipedalism for scoliosis most common deformity most

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Unformatted text preview: trunk; allows for movement; protects spinal VC cord; absorbs stress of walk/run/lifting; provides attachment of limbs, ribs, posture muscles of 33 vertebrae & 23 intervertebral discs (fibrocartilage)~ 23 • 7 cervical, 12 thoracic, 5 lumbar, sacrum (5 fused sacral), cervical, coccyx (4 fused coccygeal) coccyx • Variations can occur in # fused 4 bends to VC- cervical, thoracic, lumbar, cervical, & pelvic curvatures pelvic • Newborns C-shaped…S-shaped required Newborns for bipedalism for • Scoliosis= most common deformity, most often of thoracic region often Abnormal Spinal Curvatures Abnormal Abnormal curves result from disease, posture, paralysis or Abnormal congenital defect congenital Scoliosis= abnormal lateral deviation…caused by lack of abnormal proper development of one vertebrae proper Kyphosis= exaggerated thoracic exaggerated curve, ‘humpback’ from osteoporosis, heavy-lifting sports, diseases sports, Lordosis= exaggerated lumbar, rated ‘swayback’ from weak swayback’ abdominal muscles abdominal Vertebrae Structure Vertebrae General structure= body, spinous & transverse processes, verte...
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