Respiratory System

• Processes of Respiration - Pulmonary Ventilation (1)


  ventilation consists of inspiration + expiration

  inspiration moves air into the lungs from the atmosphere

  expiration moves air out of the lungs into the atmosphere
• Proccess of Respiration - External Respiration (2)


  O2 diffuses from the lungs into the blood

  CO2 diffuses from the blood to the lungs
• Processes of Respiration - Transport of Respiratory Gases


  the cardiovascular system transports gases using blood as the transporting fluid

  O2 is transported from the lungs to the tissue cells

  CO2 is transported out of the tissue cells to the lungs to be expelled
• Processes of Respiration - Internal Respiration (4)


  O2 diffuses from blood to tissue cells

  CO2 diffuses from tissue cells to blood