The Respiratory System at a Glance

The Respiratory System at a Glance respiratory system Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide The major organs of the respiratory system endocrine system pulmonary dulness is increased by the simultaneous development of an effusion , the resistance is in- creased , and DISEASES OF THE RESPIRATORY ORGANS 389

endocrine system Basic types of respiratory structures Respiratory structures are tailored to the need for oxygen Minute life-forms, such as protozoans, exchange oxygen and

digestive system How does the respiratory system work? There are two phases of breathing: in and out As a person inhales, the diaphragm contracts and moves The respiratory system ; Nasal cavity · Air is warmed and filtered as it enters the body ; Trachea · Brings air into the lungs Supported by rings of cartilage