Human body: The Respiratory System

The video explains the respiratory system, detailing how it allows oxygen into the blood and expels carbon dioxide. It covers the path of air from the nose through the nasal cavity, trachea, and into the lungs. The structure of the lungs, including bronchi, bronchioles, and alveoli, is described, highlighting the gas exchange process. The video also touches on the role of the larynx and vocal cords in producing sound.

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