Organs and structures associated with breathing, gaseous exchange, and the entrance of air into die body. Included are the nasal cavity, pharynx, larynx (upper respiratory tract); the trachea, bronchi, bronchioles, and lungs (lower respiratory tract); and associated muscles.
The respiratory system comprises a network of air pathways stretching from the nasal cavity to the lung’s air sacs. This intricate system includes the pharynx, larynx, trachea, and bronchi.