PCBI101 LAB: SKELETAL

• Parts of the skeletal system

  • Bones (skeleton)
  • Joints
  • Cartilages
  • Ligaments (bone to bone)
  • (tendon=bone to muscle)

  
• Functions of the skeletal system

  • Support of the body
  • Protection of soft organs
  • Movement due to attached skeletal muscles
  • Storage of minerals and fats
  • Blood cell formation
• The skeleton has 206 bones

  
• Types of bone tissue


  • Compact bone
  • Spongy bone

  
• Spongy bone


  • Small needle-like pieces of bone
  • Many open spaces
• Bone shapes

  • Long- bones are longer than they are wide
  • Short- usually square in shape, cube like
  • Flat- flat, curved
  • Irregular- odd shapes

  
• Hinge joint


  Allows extension and retraction of an appendage
• Ball and socket joint


  Allows for radial movement in almost any direction
• Diseases and conditions of the skeletal system

  • Arthritis
• MEMORIZE THIS BONES AS SOON AS POSSIBLE