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Hearing. Emily Maginnis Michelle Amaya Autumn Dahlgren Tiffany Lam Leyli Flores. Just So You Know…. Cochlea : a bony structure shaped like a snail filled with endolymph and perilymph , two fluids.
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Hearing Emily Maginnis Michelle Amaya Autumn Dahlgren Tiffany Lam Leyli Flores
Just So You Know… • Cochlea: a bony structure shaped like a snail filled with endolymph and perilymph, two fluids. • Organ of Corti: contains hair cells, and is found in the basilar membrane separating the cochlear duct and the seala tympani.
Listen Up • Hearing receptors are called hair cells. • Hearing receptors are located in the inner ear and have an important role in sensing sound waves, vibrations, and in hearing. • The movement and bending of the sensory receptors generate impulses or signals from the sound vibrations in the fluid of the cochlea.
The Pathway • Hair cells (receptors) pick up a sound in the form of a wave. • Sound waves, that transfer to vibrations, send impulses through the cochlear nerve (Cranial Nerve VIII) to the auditory cortex in the temporal lobe.
Barotrauma • Barotrauma is a condition that creates discomfort and damage to the ear by differences in pressure between inside and outside the ear. • Symptoms include slight hearing loss, dizziness, ear discomfort, and a stiff or full sensation of the ear.
Autoimmune Inner Ear Disease • AIED is an inflammatory condition in the inner ear. • Immune cells and/or antibodies attack the cells of the inner ear, mistaking them for harmful foreign invaders. • Symptoms include progressive hearing loss and/or dizziness. • Tinnitus can occur, which is a roaring or hissing noise heard.
