11 Ear flashcards.docx

Cochlea what 3 structures are responsible for balance

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COCHLEA What 3 structures are responsible for balance? 1. Semicircular Canals 2. Utricle 3. Saccule Where are hair cells found? Hair cells are receptor cells for what 2 things? Cochlea and Semicircular Canals Hearing and equilibrium What cranial nerve carries information for hearing? CN VIII VESTIBULAR COCHLEAR NERVE What is the stapes is attached to? OVAL WINDOW What structure determines movement in three planes? SEMI-CIRCULAR CANALS What are the two joined structures attached to the semi-circular canals? UTRICLE and the SACCULE . 2
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Senses and Ear Flashcards What type of fluid and what receptors are within each semi-circular canal? Endolymph and hair cells. What are calcium deposits in the inner ear called? They are an essential part of the utricle and saccule for what purpose? OTOLITHS (“ear rocks”). Equilibrium How is the Otoliths play an essential process in stimulating the hair cells? It allows the hair cells in this region to act as receptors by telling you what position your head is in and provide you a sense of equilibrium. What is VERTIGO or LABYRINTHITIS ? Inflammation of the semi-circular canals that give a sense of motion when you’re not moving. This can be debilitating. 3
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  • Fall '08
  • Harrison,C

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