1. Warm Up 2/13 1.Name the bone in the back part of the head. 2.Name the bone on the very top of the head. 3.Cheek bone - 4.Lower jaw - 5.Hole in the chin area - 6.Hole above the eyes - 7.Bump behind the ears – 8.Where two skull bones meet – 9.Soft spots on the skull of infants -

2. NOTES Ch 7 2/13 Sternum, ribs, vertebrae

3. HYOID BONE U –shaped bone Under mandible and above larynx Only bone not forming a joint (touching another bone)

4. STERNUM Breastbone Where ribs connect 3 parts - manubrium - body - xiphoid process

5. Pectus excavatum

6. RIBS (12 pair / 24) 1.TRUE RIBS (7 pr) * attach directly to the sternum by costal cartilage (flexible for breathing) 2.FALSE RIBS (5 pr) * do not attach to sternum directly Floating – last 2 pair Do not attach to sternum at all

8. SPINAL COLUMN 26 bones Spinal cord runs through VERTEBRAE (protect it) Curved – increases carrying capacity, balance

9. INTERVERTEBRAL DISKS – cartilage between vertebrae to cushion

12. 1.CERVICAL VERTEBRAE (7) 1 st – atlas 2 nd axis 2.THORACIC VERTEBRAE (12) 12 prs of ribs attach to them 3.LUMBAR VERTEBRAE (5)

14. 4.SACRUM (1) 5 separate till 25 5.COCCYX (1) “tailbone” 4-5 separate in child

15. CHALLENGE Can you learn and name all 26 vertebrae bones in 3 minutes ????

16. ATLAS AXIS C3, C4, C5, C6, C7 T1, T2, ….. T12 L1, L2, L3, L4, L5 SACRUM COCCXY

17. SPINAL COLUMN PROBLEMS 1.SCOLIOSIS – abnormal lateral curve (side to side)

19. 2.KYPHOSIS – thoracic curve extended “humpback”

20. 3. LORDOSIS – extended lumbar curve

21. LABELING 1.Cervical 2.Thoracic 3.Lumbar 4.Sacrum 5.Coccyx 6.Atlas 7.Axis 8.vertebral disks 9.Manubrium 10.Body 11.Xiphoid process 12.Cartilage 13.True ribs 14.False ribs 15.Floating ribs