![]() Any duplication or distribution of the information contained herein is strictly prohibited. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. ![]() Links to other sites are provided for information only – they do not constitute endorsements of those other sites. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. There are three small bones (ossicles) that transfer the movement of the tympanic membrane (ear drum) caused by sound waves to the inner ear. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M. Those near the oval window respond to higher frequencies.Ī.D.A.M., Inc. This transmits waves of sound through the cochlear fluid, sending the organ of Corti into motion.įibers near the upper end of the cochlea resonate to lower frequency sound. Let's watch this process in action.First, the stapes rocks against the oval window. ![]() There is an inner row on the left and three outer rows on the right. In this cut-view, you can see the organ of Corti with its four rows of hair cells. These cells translate vibrations into electrical impulses that are carried to the brain by sensory nerves. It consists of tiny hair cells that line the cochlea. This action is passed onto the cochlea, a fluid-filled snail-like structure that contains the organ of Corti, the organ for hearing. The stapes pushes in and out against a structure called the oval window. Also called the hammer, it transmits sound vibrations to the incus, which passes them to the stapes. The eardrum is connected to the malleus, one of three small bones of the middle ear. Sound waves entering the ear travel through the external auditory canal before striking the eardrum and causing it to vibrate.
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