The Respiratory System: The primary organs are located in two areas: the upper and lower respiratory tracts. The upper tract contains the nose and nasal cavity (also known as the nasal passage), the pharynx (or throat), and the larynx (or voice box).

The lower respiratory tract contains the trachea (windpipe), the bronchi, the alveoli, and the lungs. This system’s major responsibility is to control and regulate the breathing process, which involves moving air into and out of the lungs.

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