Trachea act as a resonator to amplify sound. In some birds, the tracheal rings are complete, and may even be ossified. In amphibians, the trachea is normally extremely short, and leads directly into the lungs, without clear primary bronchi. A longer trachea is, however, found in some long-necked salamanders, and in caecilians. While there are irregular cartilagenous nodules on the amphibian trachea, these do not form the rings found in amniotes. The only vertebrates to have lungs, but no trachea, are the lungfish and the "Polypterus", in which the lungs arise directly from the pharynx. The word "trachea" is used to
History of beliefs about the human body his pudenda (sex organs) then thou shalt place thy finger on it and examine his belly and knock on the fingers (percuss) if thou examinst his that has come out and has arisen by his cough. Then thou shalt say concerning it: it is a swelling of the covering of his belly. It is a disease which I will treat”. The distinct medical tone focuses on what can be felt externally to infer the maladies of the body. The body was born in the correct state but could was falable and fixable with the correct intervention and feeling and using