Describe The Relationship Between Lungs And Lungs

Inhalation (Breathing in)
As you inhale, your diaphragm contracts or tightens and moves downward and this lead to increases the space in your chest cavity which causes your lungs to expand. The intercostal muscles that are found between your ribs helps with enlarge the chest cavity as they contract which pulls your rib cage both upward and outward as you inhale.
The expandation of your lungs causes the air to be breathed in through your nose or mouth. The air goes down your windpipe and into lungs. Through your bronchial tubes it helps the air to reach and enter the alveoli or air sacs.
Oxygen from the air passes to the surrounding capillaries (blood vessels) by through the walls of the alveoli which are very thin. It is the hemoglobin which is a red blood cell protein that move oxygen from the alveoli to the blood. Also, the carbon dioxide moves from the capillaries into alveoli
Breathing out requires no effort from your body except if you have lung disease or you are doing a physical activity. Doing physically active means, your abdominal muscles contract and push your diaphragm against your lungs more even than normal pushes air out of your