Skeletal System

1. Skeletal System

2. Bone formation & development • Ossification – Bone Development • 2 phases • Osteoblasts – bone forming cells • Osteoclasts – bone destroying cells Bone Remodeling – ability of bones to maintain their shape, strength, & proportions during growth & changes in body weight

3. Bones of the Skull • Frontal Bone • Parietal Bones • Temporal Bones • Occipital Bone • Sphenoid Bone • Ethmoid Bone • Sinuses of the skull • Frontal • Ethmoid • Sphenoid • Maxillary

4. Bones of the SKull

5. Facial Bones • Maxillary Bones • Palentine Bones • Zygomatic Bones • Lacrimal Bones • Nasal Bones • Vomer Bones • Mandible Bones

8. Cervical Spine • C1 – Atlas • C2 – Axis • This joint allows you to nod & shake your head • 1 – 7 vertebraes

9. Thoracic Spine • Consist of 12 vertebrae • T1 – T12 • Vertebrae are larger than cervical

10. Lumbar Spine • Block – like vertebrae • L1 – L5 • Common back injury

11. Chest & ribs • Sternum • Xiphoid Process • 12 pairs of ribs • 7 pairs of true ribs • 5 false or floating ribs

12. Sacrum & Coccyx • Fusion of the 5 vertebrae • Coccyx – also known as the tailbone

13. Arm & Shoulder Bones • Clavicle – Collar Bone • Scapula – shoulder blades • Humerus • Radius • Ulna

14. Leg Bones • Femur • Patella • Tibia • Fibula

15. Pelvis Bones • Illium • Ischium • Pubis

16. Hands & Feet

17. Hands & Feet • Metacarpals • Metatarsals • Phalanges

19. FRactures

20. Fractures • Closed (Simple) – bone breaks but does not come through the skin • Open (Compound) – broken bone that breaks through the skin • Comminuted – bone is broken into several pieces • Greenstick – one side of the bone is broken & other side is bent • Spiral – bone is twisted • Colles – break/dislocation distal radius • www.medterms.com