muscular system

• functions of the muscular system:

  1. movement
  2. essential bodily movement
  3. posture
• what is posture?

  when muscles are regularly strengthened
• what is origin?

  where a muscle is attached to a stable bone
• what is the theory for muscle fibres?

  the sliding filament theory
• what is muscle control?

  sensory neurons conduct impulses from muscles, organs and cells to the brain. motor neurons carry impulses from the brain to the muscles in order for movement to occur.
• types of muscular actions?

  1. isometric
  2. isokinetic
  3. isoinertial (concentric and eccentric)
• what is isometric muscle action?

  involve little to no change in muscle length when tension is developed. e.g. gripping a racquet