Gaseous exchange

• Oxygenated blood is carried away from the lungs through pulmonary veins.
• What is the surface for gas exchange?

  Aif sacks/ Aveoli
• What is inhalation?

  When we breathe in or take in air in our lungs.
• What is exhalation?


  When we breathe out air
• What is the waste product called in the breathing proces?

  Carbon dioxide