. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. XXX. THE SPECIAL SENSES {concluded). Auditory Sensations. As with "visual sensations the sensory fibers of the nerves of hearing have their endings in a pair of external organs called the ears. By means of these ears the waves of sound are made to produce impulses of hearing just as the eyes transform waves of light into visual impulses. Structure and form of the ears.— The ears are to exter- nal appearance merely two twisted flaps of skin-covered Endolymphatio Duct ,'Saccule. Eustachian Tube Pig. 223—Diagr
. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. XXX. THE SPECIAL SENSES {concluded). Auditory Sensations. As with "visual sensations the sensory fibers of the nerves of hearing have their endings in a pair of external organs called the ears. By means of these ears the waves of sound are made to produce impulses of hearing just as the eyes transform waves of light into visual impulses. Structure and form of the ears.— The ears are to exter- nal appearance merely two twisted flaps of skin-covered Endolymphatio Duct ,'Saccule. Eustachian Tube Pig. 223—Diagram of the ear. ^^^^^ Vestibular Passage <^^Tjimpanio Passage Fenestra Rotunda cartilage attached one on each side of the head. These external flaps are, however, only the external parts of the organ whose sensitive parts are embedded in cavities of the temporal bones. For convenience in description, we divide the ear into three parts, which we call the external ear, the middle ear, and the inner ear. Since both ears are 470. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eddy, Walter Hollis, b. 1877. New York, Cincinnati [etc. ] American book Co
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