Lungs and Respiratory System
respiratory system Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide The major organs of the respiratory system
pulmonary dulness is increased by the simultaneous development of an effusion , the resistance is in- creased , and DISEASES OF THE RESPIRATORY ORGANS 389 operating system The respiratory tract is the path of air from the nose to the lungs It is divided into two sections: Upper Respiratory Tract and the Lower Respiratory Tract
respiratory system Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide The major organs of the respiratory system
system789 pulmonary dulness is increased by the simultaneous development of an effusion , the resistance is in- creased , and DISEASES OF THE RESPIRATORY ORGANS 389
The respiratory tract is the path of air from the nose to the lungs It is divided into two sections: Upper Respiratory Tract and the Lower Respiratory Tract