Please enable JavaScript.

Coggle requires JavaScript to display documents.

The respiratory system, The cardiovascular system, Aerobic respiration and…

- - - - The amount of air normally inhaled and exhaled per breath
    - - The maximum volume of air exhaled after the lungs have been filled up
    - - The volume of air contained in the lungs at the end of maximal inspiration
  - - - We inhale to supply our cells with oxygen
      - Air in
        
        21% oxygen/0.04% CO2
      - chest volume increases as air is sucked into the lungs
      - The intercostal muscles contract to expand the rib cage
      - The diaphragm contracts and moves down
    - - takes place in the alveoli, where oxygen diffuses from the air to the blood and carbon dioxide diffuses from the blood to the air
    - - We exhale to remove CO2 from our bodies
      - Chest volume increases the air is forced out the lungs
      - the intercostal muscles and diaphragm relax and move upwards