Air is drawn in by the nose and mouth, passes through the bronchi to the bronchioles and finally reaches millions of alveoli. Around the alveolar is a group of many capillaries and between the alveolar wall and capillary membrane is a small space called interstitial space. Oxygen (O2) in the alveolar after inhalation goes through the alveolar wall, the interstitial space and capillary membrane to go inside the capillary
Air is drawn in by the nose and mouth, passes through the bronchi to the bronchioles and finally reaches millions of alveoli. Around the alveolar is a group of many capillaries and between the alveolar wall and capillary membrane is a small space called interstitial space. Oxygen (O2) in the alveolar after inhalation goes through the alveolar wall, the interstitial space and capillary membrane to go inside the capillary