Muscular system

• muscular system functions

  movement, strength, heat production, shock absorption, posture, respiration.
• cardiac muscle

  contracts to pump blood into blood vessels and rest of body - involuntary
• skeletal

  function - produce movement, generate heat, protect organs - voluntary muscles
• smooth


  control respiration, movement of food, and regulation of blood flow in arteries - involuntary.
• origin and insertion

  origin - attachment site that doesn't move during contraction, insertion - attachment site that moves when a muscle contracts
• muscle origin and insertion

  
• muscles of the head and neck

  facial expressions. The jaw - produces chewing movements, and assist with eating, and the neck - assists with swallowing.
• muscles of the head and neck

  
• muscles of the trunk


  support and stabilizing our hips and spinal column
• muscles of the hip and thigh

  specialised for walking and balancing
• disorders of the muscular system


  strains, inflammation, tendonitis