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Five Major Functions of Skeleton

Five Major Functions of Skeleton. Provides shape and support Enables the body to move Protects internal organs Produces blood cells Store materials until body needs it. SHAPE AND SUPPORT. Skeleton determines the shape of your body.

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Five Major Functions of Skeleton

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  1. Five Major Functions of Skeleton Provides shape and support Enables the body to move Protects internal organs Produces blood cells Store materials until body needs it

  2. SHAPE AND SUPPORT • Skeleton determines the shape of your body. • Bone that makes up the center of the skeleton is the backbone. • The 26 small bones make up the backbone are called vertebrae. • Allow movement (bending, twisting)

  3. MOVEMENT • How does the skeleton help the body move? • Muscles pull on bones to make the body move.

  4. PROTECTION • Bones protect the organs in your body. • EXAMPLE: • Skull protects the brain • Rib cage protects the heart and lungs

  5. PRODUCTION • Some bones in your body produce substances that your body needs. • The long bones of the arms & legs make blood cells. STORAGE • Bones will store minerals such as Calcium and Phosphorus. • When your body needs the minerals, the bones release small amounts of them into the blood

  6. JOINTS • What is a joint? • A place in the body where 2 bones come together. • What are 2 kinds of joints in the body? • Movable • Immovable

  7. MOVABLE JOINTS • Most of the joints in the human body are movable. • Joints are held together by: • Ligaments Connects bone to bone • Synovial Fluid  clear liquid to lubricate joint • Cartilage  cushioning connective tissue • Covers the ends of the bones and keeps them from rubbing against each other.

  8. IMMOVABLE JOINTS • Joints in the body connect bones in a way that allows little or no movement. • EXAMPLE: • Bones of the skull are held together by immovable joints.

  9. FOUR TYPES OF MOVABLE JOINTS

  10. FOUR TYPES OF MOVABLE JOINTS

  11. FOUR TYPES OF MOVABLE JOINTS

  12. FOUR TYPES OF MOVABLE JOINTS

  13. FOUR TYPES OF MOVABLE JOINTS

  14. FOUR TYPES OF MOVABLE JOINTS

  15. FOUR TYPES OF MOVABLE JOINTS

  16. FOUR TYPES OF MOVABLE JOINTS

  17. FOUR TYPES OF MOVABLE JOINTS

  18. FOUR TYPES OF MOVABLE JOINTS

  19. BONES – STRONG & LIVING • Bones are living (made of cells), and undergo growth and development. • Bone Strength: • 20% of body weight is bone • Stronger than concrete or granite rock • WHY? • Just like a rock, a bone is packed with minerals…phosphorus and calcium

  20. BONE LAYERS • Outer membrane Thin, tough outer covering • Compact bone  Hard and dense, not solid, Blood vessels and nerves run through this area • Spongy bone  Lots of small spaces, lightweight tissue, contains the marrow • Red marrow  Produces blood cells • Yellow marrow  Fat storage as an energy reserve

  21. BONE GROWTH & DEVELOPMENT • Bones will make new bone tissue when: • 1. During growth • 2. In response to the force of the body’s weight • 3. Healing a broken bone

  22. TAKING CARE OF YOUR BONES What can you do to keep your bones healthy? Balanced diet Regular exercise A condition in which the body’s bones become weak & break easily? Osteoporosis  Mineral loss in bones allowing body to become weak and break easily

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