Musculoskeletal System

• Purpose

  -movement, form and structure (muscle and bones work together to create movement)

  !NB! bones and skeleton provide a place for muscle to attach

  -bones also provide protection to important organs
• Parts: muscle, bone, cartilage, tendons and ligaments
• Cartilage: between bones at joints and vertebrae, ears and nose
• Tendons: Connect muscle to bone & allows muscle to move bone.(inelastic)
• Ligaments: Connect bones to bones & hold them in place.(elastic)
• Processes

  -muscle contraction and relaxation allows locomotion and movement
• Locomotion: forward propulsion

  , one place to another
• Movement: changing position of a body part / the whole body.
• Health issues: Osteoporosis, Arthritis, Rickets
• Osteoporosis

  >thinning of bone("porous")

  -older women due to hormonal changes

  -deficiency of calcium (builds strong bones) and vit. D (absorbs calcium)
• Rickets

  -deficiency of calcium and vit. D in young children

  >bone is weak and soft causing them to bend.
• Arthritis

  -degenerative

  -inflammatory

  -infectious

  -metabolic