Chapter 5 The Skeletal System Copyright 2009 Pearson

Chapter 5 The Skeletal System Copyright © 2009 Pearson Education, Inc. http: //springcove. schoolnet. com/outreach/martinsburg/teachers/hbarbarini/6570/skeletalsystem/

Structure of Bone Copyright © 2009 Pearson Education, Inc. Figure 5. 1

Bone Development (cont. ) Blood vessels carry osteoblasts Copyright © 2009 Pearson Education, Inc. Figure 5. 2

Axial Skeleton: Vertebral Column Cervical vertebrae (7) Thoracic vertebrae (12) 1 2 3 4 5 6 7 8 9 10 11 12 Intervertebral disks 1 2 Lumbar vertebrae (5) 3 4 5 Sacrum (5 fused) Coccyx (4 fused) Copyright © 2009 Pearson Education, Inc. Figure 5. 7

Axial Skeleton: Vertebral Column (cont. ) § Ribs § Twelve pairs § 7 connected to the sternum via cartilage § 8 – 10 connected to the 7 rib therefore, indirectly connected to the sternum § Bottom two pair floating; only connected to the vertebral column and not the sternum § Sternum: breastbone § Three bones fused together Copyright © 2009 Pearson Education, Inc.

Appendicular Skeleton § Pectoral girdle: shoulder § Clavicle and scapulas Copyright © 2009 Pearson Education, Inc.

Appendicular Skeleton Pelvic girdles: hip § Coxal bones, sacrum, pubic symphysis Copyright © 2009 Pearson Education, Inc.

Synovial Joints Knee Replacement Knee Anatomy Copyright © 2009 Pearson Education, Inc. Figure 5. 12 a