The Auditory Apparatus Small 256×320 Medium 511×640 Large 818×1024 Download TIFF Original 1918×2400 | (653.7 KB) Description The auditory apparatus with the surrounding bone removed. Labels: M, external auditory canal; SC, semicircular canals; C, cochlea. Keywords auditory, canals, ear Galleries Human Sensory Systems: Hearing Source: Jenkins, Oliver P. Primary Lessons in Human Physiology (Indianapolis: Indiana School Book Company, 1891) 179