BIOL 212 Lecture Notes - Lecture 14: Inner Ear, Tinnitus, Mastoid Part Of The Temporal Bone

• School: University of San Diego
• Department: Biology Courses
• Course: BIOL 212
• Professor: Stitt

Document Summary

14 - the special senses (eyes and ears) x. Contains hair cells that are stimulated by sound vibrations. Converted into nerve impulses that are transmitted to the brain for interpretation as hearing. 3 bony, fluid-filled loops located behind the vestibule. Slow-growing cystic mass made up of epithelial cell debris found in the middle ear. Occurs as a congenital defect or as a result of chronic otitis media. Hearing loss caused by the breakdown of transmission of sounds waves through the middle and/or external ear. Hearing loss caused by the inability of nerve stimuli delivered to the brain from the inner ear due to damage in the auditory nerve or cochlea. Excessive accumulation of wax like secretions from the glands of the external ear canal. Infection or inflammation of the labyrinth or the inner ear. Specifically, the 3 semicircular canals in the inner ear. Primary symptom is vertigo with altered balance.