The lungs are massive vessel-like organs in the chest cavity. They are the largest and most essential part of the respiration system. The air we breathe enters and exits our lungs through two passages; the bronchioles and the bronchi. Lungs’ main responsibilty is to take oxygen from the atmosphere and transport it into the bloodstreem. It then excretes carbon dioxide from blood into the atmoshpere.
Lungs – The Respiration Necessity
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