What organ system is found only in the thoracic cavity? Anatomy & Physiology Circulatory and Respiratory Systems Respiratory System 1 Answer Rawda Eada Dec 21, 2015 The respiratory system Answer link Related questions What is the significance of the fact that human tracheal cartilage rings are incomplete... How is oxygen, carbon dioxide, and other waste gases exchanged in the lungs and body tissues? What is the function of the lungs in connection with the circulatory system? How do the lungs function as excretory organs? What do pulmonary function tests measure? What is the difference between FEV1 and FVC? What is pulmonary hypoplasia? Is this condition hereditary? Why are there 3 lobes in the right lung and 2 in the left? What is the purpose of these lobes? Can pneumonia have a permanent affect on lung function? How do the lungs clear out dust that settles in them and sticks to inner surface of their walls? What is the function of the hilus? Is the word "hilum" the plural form of "hilus"? See all questions in Respiratory System Impact of this question 4276 views around the world You can reuse this answer Creative Commons License