Middle-ear function in a monotreme: the Echidna (Tachyglossus aculeatus).
D000161:Acoustic Stimulation; D000717:Anatomy, Comparative; D000818:Animals; D004429:Ear Ossicles / Q000502:physiology; D004432:Ear, Middle / Q000033:anatomy & histology / Q000502:physiology*; D008322:Mammals / Q000033:anatomy & histology / Q000502:physiology*; D008722:Methods; D010828:Physiology, Comparative