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Group 8 Duncan, C.; Morando, A.; Robinson, R. Chapter 15: Integumentary, Skeletal, and Muscular Systems Lesson 2: The Skeletal System 8 th Grade 13-14 Year Olds. The Skeletal System. What Does My Skeletal System Do?. Structure Stability Movement Protection.
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Group 8 • Duncan, C.; Morando, A.; Robinson, R. • Chapter 15: Integumentary, Skeletal, and Muscular Systems • Lesson 2: The Skeletal System • 8th Grade • 13-14 Year Olds
What Does My Skeletal System Do? • Structure • Stability • Movement • Protection
Structure-How We’re Put Together • Axial (skull, spine, ribs, sternum, breastbone) • Appendicular (shoulders, arms, legs, hands, hips, feet)
What’s Inside Our Bones? • Spongy Bone • Marrow Cavity • Compact Bone • Cartilage
Different Types of Bones • Long • Short • Flat • Irregular
Cartilage • A type of connective tissue • Lines joints to cushion the bone and allow the joint to move easily without pain • Helps form flexible portions of the nose and ear
Joints • Ball-and-Socket • Pivot • Ellipsoidal • Hinge
Practice • What kind of joint is your knee? • What about your hip? • Elbow? • Shoulder?
Ligaments and Tendons • Ligaments connect bone to bone • Tendons connect muscle to bone
Eating Your Way to Strong Bones • Diet • Milk is rich in calcium and high-quality protein. Nearly all U.S. milk has vitamins D and A added and it has magnesium and zinc. • All of these vitamins and minerals help build strong bones.
Why Drink Milk? • Could this happen to you?
Work Your Bones Weight Lifting • Exercise • Weight bearing exercise makes your bones strong and healthy • it stimulates bone formation and strengthens the muscles connected to the bones Baseball Aerobics Basketball
Problems of the Skeletal System • Fractures • Hairline • Transverse • Comminuted
What? A disease causing the bones to become very porous This makes bones prone to fractures and slow to heal Who? Most common in women following menopause More common in females Osteoporosis
What? An abnormal lateral curvature of the spine Who? Scoliosis can affect anyone Why? Birth defect Nerve or muscle problems deterioration of the bony material (discs) that separate the vertebrae Scoliosis
Joint Injuries • Dislocation • Torn cartilage • Bunion • Bursitis • Arthritis
Repetitive Motion Injury • What? • an injury or illness resulting from bodily motion which imposes stress or strain upon some part of the body due to the repetitive nature of a task • Examples • Carpal tunnel syndrome • Gamer’s Thumb