Respiratory System

Providing oxygen 24/7

Lungs: The never tiring

The most important organ in the Respiratory System, The lungs provide oxygen to the body. They take in the oxygen when air enters your mouth or nose and goes through your trachea to your lungs. The air goes through smaller and smaller tubes in the lungs called Bronchial Tubes. From there, the air spreads to alveoli which are surrounded by blood vessels called capillairies. The oxygen moves through the walls throughout the alveoli through the capillaries into the blood stream.

Where are the lungs:

The lungs are surrounded by the ribcage and rest on the diaphragm. When the diaphragm contracts and ribcage expands it drops air pressure inside lungs. When the diaphragm relaxes and moves up, it deflates the lungs and pushes CO2 out (exhale).


Oxygen and Carbon Dioxide: Surviving vs. Not

  • Oxygen- allows all cells to create energy. Body Cells need it for growth as well.
  • CO2 is harmful- they are waste, made in cells

The lungs take in Oxygen and push out Carbon Dioxide

Respiration-Ventilation 3D Medical Animation