The skeletal system

• Skeletal system


  Primarily composed of bones and joints
• Skeletal system


  • Provides structural support
  • Provides protection for vital organs
  • Facilitates movement
• Categories of bones


  • Flat
  • Long
  • Short
• The adult human skeleton usually contains 206 bones
• Types of joints


  • Hinge
  • Pivot
  • Ball and socket
  • Gliding
• Bone


  A hard, dense material, primarily made of a framework of collagen and the mineral calcium phosphate
• Parts of bones


  • Periosteum
  • Compact bone
  • Spongy bone
  • Bone marrow
• Periosteum


  A dense membrane that covers the outer surface of all bones
• Compact bone


  Also known as cortical bone, provides strength and rigidity
• Spongy bone


  Also known as cancellous bone, has an open, honeycomb-like structure that is light but strong
• Bone marrow


  Found in the hollow interior of bones and generates new cells, such as red blood cells, white blood cells, and platelets
• Musculoskeletal system


  The skeletal system collaborates with the muscular system to provide locomotion
• Joints


  • Serve as the pivot points for movement
  • Some bones have unique shapes that allow for a wide range of motion, such as your vertebrae that enable you to bend and twist your spine
• Osteoporosis


  A common skeletal system disorder where bones weaken and become more likely to break
• Regular exercise, particularly weight-bearing activities like walking or lifting weights


  Can help keep bones strong and healthy
• Nutrition


  Plays a vital role in maintaining bone health, particularly calcium and vitamin D, which aids in calcium absorption