Source:http://linkedlifedata.com/resource/umls/id/C0035237
MSH: The tubular and cavernous organs and structures, by means of which pulmonary ventilation and gas exchange between ambient air and the blood are brought about.,CSP: structure and passages involved with the intake, expulsion, and exchange of oxygen and carbon dioxide between blood and air; they include the nose, pharynx, larynx, trachea, bronchi, and the lungs.,NCI: The organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs.,FMA: Functional system which consists of structures involved in respiration.