brain

• cerebellum


  controls balance posture fine muscle movement
• cerebral cortex


  2 halves

  senses languages memory behaviour consciousness
• medulla oblongata


  top of spinal cord

  controls breathing and heart rate

  reflexes no need of conscious thoughts
• CT scan


  multiple x ray taken on parts of body and put together by computer
• PET scan 


  show brain activity

  patient injected radioactive glucose

  radioactive atoms cause gamma rays

  scanner detects build image
• radiotherapy


  use ionising radiation to treat disease like killing cancer cells
• treating brain risk


  healthy nervous tissue also can be damaged
• risk of surgery to remove disseased tissue


  bone protect CNS= difficult to get them for surgery
• blood brain barriers 


  barrier stops substances diffusing out of capillaries to brain

  hard for medicine to get into brain