The Axial Skeleton

Honors Anatomy & PhysiologyThe Axial SkeletonSkeletal Divisions206 separate bones + cartilages

Axial Skeleton (80 bones)Skull (22 bones) + 7 associated bonesThoracic Cage (24 ribs + sternum)Vertebral Column (26 bones)

Appendicular Skeleton (126 bones)Limb bonesPectoral and pelvic girdles

The Skull

Paranasal Sinuses: Mucosal lined air cavities that lighten the skull and resonate sound, mucusal secretions are released into the nasal cavity

Anterior View

Superior View

The Skull

Newborn Skull

The Thoracic Cage

The Vertebral Column7 Cervical vertebraeAtlas C1 (yes)No bodyAxis C2 (no)dens12 Thoracic vertebraeArticulate with ribs5 Lumbar vertebraeLargestSacrum and coccyx fused together

Atlas and Axis

Typical Vertebrae

Sacrum and Coccyx

HomeworkWrite 1 paragraph explainingCompare Scoliosis, Lordosis and KyphosisWhat are theyHow treatedHow compareInclude works cited