Structure of the respitory system

• Are Breathing and respiration the same thing

  NO
• breathing


  the movement of gases in and out of the lungs. Muscles are involved. Often known as ventilation.
• respiration


  breakdown of nutrient molecules to release energy. Takes place in all living cells
• alveoli


  air sacs where gas exchange happens
• bronchi


  the two tubes (one leading to each lung) that the trachea splits into
• bronchiole


  the smaller tubes that the bronchi split into
• diaphragm 


  a muscular sheet at the bottom of the thorax involved in ventilation
• intercostal muscle


  the muscles found between the ribs involved in ventilation
• pleural membranes


  moist membranes between the inside of the thorax and lugs that provide lubrication to prevent the lungs from 'sticking'
• ribs 


  bones that surround the lungs- act as protection and involved in ventilation
• trachea


  the 'windpipe' - passage of air from outside to inside