Lungs and thoracic diaphragm-Working together to help you breathe

Wednesday, October 24, 2018



The lungs and diaphragm work together to bring oxygen into the lungs and to move carbon dioxide out of your lungs.
Let's go over several facts about the lungs and the muscular diaphragm.


  • The diaphragm is a large muscle that is found under your lungs. 
  • Your lungs are actually composed of millions of tiny air sacs and depend on the diaphragm in order to inflate
  • Your rib cage also helps out by having cartilage which allows the rib cage to expand and contract.
  • When you take a deep breath your diaphragm moves down and a low-pressure area is created and air flows into your nose and mouth
  • Your nose and nasal passages have tiny hairs called cilia and mucus that help filter dirt and pollen out of the air.
  • The larynx which is commonly called the voice box allows you to talk and sing.
  • The epiglottis is a flap of connective tissue that covers over the larynx during breathing
  • The epiglottis stands open during breathing, allowing air into the larynx. During swallowing, it closes to prevent choking on food
  • The trachea is a rigid tube made of cartilage.
  • The trachea leads into two tubes called the left and right bronchus
  • These tubes continue to branch until you reach a tiny air sac called a alveoli
  • At the alveoli, oxygen diffuses into the capillaries and carbon dioxide diffuse into the alveoli and is exhaled.
  • As you exhale the diaphragm moves upward and carbon dioxide and air flow out.


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