Illustration of the anatomy of the human ear
Illustration of the anatomy of the human ear. Sound waves are collected by the ear pinna (at left) and pass down an auditory canal to strike the eardrum (centre, white). Vibrations are trans- mitted via three tiny ear bones (malleus, incus & stapes) into fluid-filled structures of the inner ear (at centre right). Three coils of the semi- circular canals detect balance and body orien- tation. While in the cochlea (blue), tiny hair cells are sensitive to vibrations of the cochlear fluid and these activate nerves (yellow) which connect to the brain. Thus, a sense of hearing results from the conduction of sound waves through air, bone and fluid in the ear.
© David Gifford/Science Photo Library
Middle and inner ear
Middle and inner ear. Artworkillustrating the internal organs of the human ear.The middle ear transmits sound from the tympanum(ear drum, pink oval at centre) to the inner ear.It consists of 3 tiny joined bones (the ossicles, white): the malleus, joined to the inside of theeardrum, the incus, and the stapes, connected tothe inner ear. The inner ear consists offluid-filled passages called the labyrinth(orange). The spiral cochlea contains microscopichairs that respond to sound vibrations from themiddle ear. Nerves (long, tubular at right)connect the cochlea to the brain. The loops abovethe cochlea are semi- circular canals which areresponsible for balance.
© Bo Veisland, Miandamp;amp;i/Science Photo Library
23rd August 1956: A mother sits on a bed to hear her young son in dressing gown and slippers kneel beside her to say his prayers. (Photo by Chaloner Woods/Getty Images)
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