How To Use Respiratory organ In A Sentence

What you wrote here implies that the penis is a respiratory organ, which would be a neat trick. It’s not my policy to respond to trolls, but…
The first pair of gill- rakers of the fish extends to form a supplementary respiratory organ (a labyrinth organ).
Turkish physicians in the form of a decoction, which is regarded by them as of peculiar efficacy in diseases of the respiratory organs. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology
Outside of the transfusion of blood, for which there are strong reasons for believing would be attended with happy results, the sole remedies available in serpent poisoning are measures looking to the prompt cutting off of the circulation of the affected part, and the direct stimulation of the heart's action and the respiratory organs, until such a time as Nature shall have eliminated all toxical evidences; and these must necessarily be mechanical. Scientific American Supplement, No. 421, January 26, 1884
In South America the "round-headed hassar" of Guiana, _Callicthys littoralis_, and the "yarrow," a species of the family Esocidæ, although they possess no specially modified respiratory organs, are accustomed to bury themselves in the mud on the subsidence of water in the pools during the dry season. [ Sketches of the Natural History of Ceylon

There is a high frequency of inborn defects of respiratory organs and bronchiectasis.
The same causes which produce inflammation of the lungs, of the bronchia, and of the other respiratory organs, produce also pleurisy. Cattle and Their Diseases Embracing Their History and Breeds, Crossing and Breeding, And Feeding and Management; With the Diseases to which They are Subject, And The Remedies Best Adapted to their Cure