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This is a moderately sized slide deck that introduces the major systems of bones of the human body.
It has one title slide and several content slides, each dedicated to a key system:

1. The Human Skeletal System An Expanded Overview of Bones

2. Overview of the Skeletal System The adult human skeleton has 206 bones Divided into axial and appendicular skeleton Provides support, protection, and movement

3. Axial Skeleton Skull – protects the brain Vertebral column – supports body, protects spinal cord Rib cage – protects heart and lungs

4. Appendicular Skeleton Pectoral girdle – clavicles and scapulae Upper limbs – arms, forearms, hands Pelvic girdle – hip bones Lower limbs – thighs, legs, feet

5. Bone Composition Compact bone – dense, strong outer layer Spongy bone – porous, contains red marrow Bone marrow – red (blood cell production) and yellow (fat storage)

6. Types of Bones Long bones – femur, humerus Short bones – carpals, tarsals Flat bones – skull, sternum Irregular bones – vertebrae Sesamoid bones – patella

7. Bone Cells Osteoblasts – build new bone Osteoclasts – break down bone Osteocytes – maintain bone tissue

8. Bone Growth and Remodeling Occurs through ossification Influenced by hormones and nutrition Bone constantly remodeled to maintain strength

9. Joints and Movement Fibrous joints – immovable (skull sutures) Cartilaginous joints – slightly movable (spine) Synovial joints – freely movable (knee, shoulder)

10. Common Bone Disorders Osteoporosis – reduced bone density Arthritis – joint inflammation Fractures – broken bones

11. Fun Facts The femur is the longest bone in the body The stapes (ear bone) is the smallest bone Bones make up about 15% of body weight