Internal Resp. Gas Exchange

    Cards (9)

    • Gas exchange in the alveoli
      1. Diffusion of carbon dioxide out of blood
      2. Diffusion of oxygen into blood
    • Gas exchange in the alveoli takes place through the process of diffusion
    • Material moves from an area of higher concentration to an area of lower concentration
    • Blood that goes to the alveoli through the capillaries is poor in oxygen and rich in carbon dioxide
    • Carbon dioxide in the blood
      Diffuses out of the blood into the alveoli
    • This gas is released out of the body when you exhale
    • Oxygen from the inhaled air inside the alveoli
      Diffuses into the blood
    • The blood, which is now rich in oxygen and poor in carbon dioxide, leaves the alveoli
    • The blood flows back into the heart which pumps the blood to be delivered to different parts of the body