SCIENCE

• Skeleton


  206 = average bones
• Skeletal System


  • Provides framework
  • Enables movement
• Axial


  • Skull
  • Backbone
  • Breastbone
  • Ribs
• Appendicular


  • Shoulder bones
  • Bones in legs and arms
  • Hips
• Bones


  • Protect certain parts/organs of the body
  • Support and aid movement
• Synovial fluid


  An oil-like fluid at the end of the bones that lubricates the bones
• Ligaments


  Connect bones to another bone
• Tendons


  Connect bone to muscle
• Cartilage


  Shock absorber
• Muscular System


  • Gives the body shape and mass
  • 646 muscles in the body
  • Muscles can relax and contract
• Types of joints


  • Gliding joint
  • Hinge joint
  • Ball and socket joint
  • Saddle joint
  • Pivot joint
• Gliding joint


  Sliding bones over each other
• Hinge joint


  Bending and straightening
• Ball and socket joint


  Free movement in all directions
• Saddle joint


  Fitting in several directions
• Pivot joint


  Limited movement, turning right to left
• 3 Types of muscles

  • Skeletal (voluntary)
  • Smooth (involuntary)
  • Cardiac(involuntary)
• Differentiate axial to appendicular skeleton

  Axial protects,appendicular provides structure
• Differentiate cartilage,tendon,and ligaments


  Cartilage-shock absorber

  Tendon-connects muscle to bone

  Ligaments-connects bones to bones
• State the levels of organization in the human body

  Atom>molecules>cell>tissue>organ>organsystem>organism