The inner ear is made up of the cochlea and the

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The inner ear is made up of the cochlea and the semicircular canals. The fluid that fills the cochlea receives vibrations from the ossicular chain of the middle ear and transmits the pressure to the semicircular canals. Within the semicircular canals, the pressure variation of the filling fluid moves cilia of the hair cells of these structures. The hair cells then generate action potentials that are transmitted to the brain through the auditory nerves. Hearing Review - Image Diversity: inner ear auditory pathway 9. What is the vestibular system? How does it operate? The vestibular system is the part of the ear that participates in the control and regulation of the equilibrium of the body (balance). The semicircular canals of the inner ear are placed perpendicularly and detect changes in the gravitational position
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of the head (this is another sensorial function of the inner ear, besides auditory perception). When the head rotates the pressure of the fluid within the canals upon the cilia of specific receptor cells varies and these cells generate action potentials transmitted by the vestibulocochlear nerve. The neural impulse is then interpreted by the brain as information on the gravitational position of the head. Hearing Review - Image Diversity: vestibular system
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  • Spring '16
  • kate

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