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Sagittal section of upper respiratory system illustrating the internal anatomy of the nasal cavity,
Structure of the trachea, which extends from the larynx above to the main bronchi below.
Placing an endotracheal tube in the trachea with direct visualization by laryngoscopy.
Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
True-color image of layers of haze in Titan's atmosphere.
True Dover Sole