2.  Protect and support digestive and respiratory tracts

3.  Floor of orbits  Walls of nasal cavity  Hard palate—roof of mouth

5.  Posterior to hard palate

7.  Forms part of nasal septum

9.  Cheekbones

11.  Bridge of nose

13.  Orbits medial surface

15.  Lateral nasal cavity  Slows airflow

17.  Lower Jaw  Only moveable facial bone

19.  U-Shaped  Base for larynx muscles (voicebox), tongue and pharynx  Stabilizes larynx  “Adams Apple”

21.  Fusion of bones not complete at birth  Fontanels—soft spots  Flexible  Allows skull to expand with brain

23.  AKA: Spine  Cervical Vertebrae—7  C1-C7  Neck Region  Thoracic Vertebrae—12  T1-T12  Articulates with ribs  Lumbar Vertebrae—5  L1-L5  Lower Back  Sacrum—5 fused vertebrae  Coccyx--Tailbone

25.  4 Spinal curves  Primary curves—thoracic and sacral  Appear late in fetal development  Secondary curves—cervical and lumbar  Appear months after birth  Cervical—infant can hold up their head  Lumbar—child can stand

27.  Kyphosis—exaggerated thoracic curvature  Lordosis—exaggerated lumbar curvature  Scoliosis—abnormal lateral curvature

28.  Vertebral body—massive, weight-bearing portion  Intervertebral disc—lies between each vertebrae  Vertebral canal—encloses spinal cord  Intervertebral foramina—gaps that allow nerves to run off