The respiratory system is responsible for the exchange of gases—primarily oxygen and carbon dioxide—between the body and the environment. It includes structures like the lungs, trachea, bronchi, bronchioles, and alveoli. Air enters the body through the nose or mouth, travels down the trachea, and into the lungs where oxygen is absorbed into the bloodstream and carbon dioxide is removed.

Respiratory System – YouTube

https://youtu.be/v_j-LD2YEqg?si=pnLDQOikNg2MBalU

Join the Amoeba Sisters for a brief tour through the human respiratory system! This video will discuss why the respiratory system is so important and address…