Honors Anatomy & Physiology

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Honors Anatomy & Physiology The Axial Skeleton Honors Anatomy & Physiology

Skeletal Divisions 206 separate bones + cartilages Axial Skeleton (80 bones) Skull (22 bones) + 7 associated bones Thoracic Cage (24 ribs + sternum) Vertebral Column (26 bones) Appendicular Skeleton (126 bones) Limb bones Pectoral 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 Column 7 Cervical vertebrae Atlas C1 (yes) No body Axis C2 (no) dens 12 Thoracic vertebrae Articulate with ribs 5 Lumbar vertebrae Largest Sacrum and coccyx fused together

Atlas and Axis

Typical Vertebrae

Sacrum and Coccyx

Homework Write 1 paragraph explaining Compare Scoliosis, Lordosis and Kyphosis What are they How treated How compare Include works cited