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Axial Skeleton
Skull
22 bones– 8 cranium
Encloses cranial cavityFluid-filledCushions and supports brain
– 14 face
Skulls of Infants and Children
Contains more bones Separated by fontanels
– Allow growth and distortion
Skull growth complete at 7 yrs.
Cranium Bones
Frontal
Occipital
Parietal
Sutures
Temporal
Mandible
Maxilla
Zygomatic bone
Nasal bones
Facial Bones
Hyoid
Does not directly articulate with any other bone.
Aids in tongue movement and swallowing
Vertebral ColumnThoracic Cage
Spinal Curvature
4 spinal curves– Primary
Thoracic Sacral
– Secondary Cervical Lumbar
Vertebral Types
Cervical (7)
– C1 (Atlas)
– C2 (Axis)
Thoracic (12)
Lumbar (5)
Sacrum (5 fused)
Coccyx (3-5 fused)
True ribs (Top 7)
False ribs (Middle 3)
Floating ribs (Bottom 2)
Sternum
Thoracic Cage
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