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In humans and other mammals, the anatomy of a typical respiratory system is the respiratory tract.The tract is divided into an upper and a lower respiratory tract.The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds.
The following other wikis use this file: Usage on bg.wikipedia.org Дихателна система; Usage on el.wikipedia.org Αναπνευστικό σύστημα