Hair Cells

False-colour scanning electron micrograph of hair cells (orange v-shaped structure) which is part of the organ of Corti in the inner ear.  This organ is situated inside the cochlea and converts the mechanical energy of sound waves into electrical stimuli.  The hair cells are immersed in a fluid called endolymph and react to the pressure of sound waves with an undulatory motion.  This motion stimulates a nerve ending in each group of hair cells which carries a signal to various parts of the brain through the Cochlear nerve.

False color SEM of inner ear cells                Image from ScienceSoup tumblr (link)

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