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The Human Respiratory System:

This is an image showing the respiratory system of humans. It consists of the airway (wind pipe) and the lungs. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles. The lungs act as the functional units of the respiratory system by passing oxygen into the body and carbon dioxide out of the body

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License:[Source CIET, NCERT ]Feb. 20, 2017, 11:35 a.m.