1. Axial Skeleton Ch. 7

2. Skull 22 bones Cranial (8) – Frontal, parietal (2), temporal (2), occipital, sphenoid, ethmoid Facial (14) – Nasal (2), maxillae (2), zygomatic (2), mandible, lacrimal (2), palatine (2), inferior nasal conchae (2), vomer

3. Cranial Bones

4. Facial Bones

5. Fontanelles Dense connective tissue filled space between skull bones at birth

6. Sutures Immovable joint found between skull bones Begin to ossify between age 20-30 Sutures – Coronal – between frontal bone and 2 parietal bones – Sagittal – between two parietal bones – Lambdoid – between parietal bones and occipital bone – Squamous – between parietal bones and temporal bones

7. Sutures

8. Vertebral Column 26 vertebrae Numbered by region – C-1, T-5, L-3, etc. 5 regions – Cervical (neck) – 7 – Thoracic (chest) – 12 – Lumbar (lower back) – 5 – Sacrum – 5 fused – Coccyx – 4 fused

9. Vertebral Column Spinal curvatures – one for each region

10. Vertebrae C-1 – atlas; C-2 – axis

11. Rib Cage 1-7 are true ribs – attached to sternum 8-12 are false ribs – not attached to sternum 11-12 are floating ribs – not attached to anything Intercostal space – space between ribs

12. Rib Cage and Sternum Clavicle Xyphoid process Sternum