Search results
Results from the WOW.Com Content Network
Stereocilia (along with the entirety of the hair cell) in mammals can be damaged or destroyed by excessive loud noises, disease, medications, as well as toxins and are not regenerable. [3] [11] Environmental noise induced hearing impairment is probably the most prevalent noise health effect according to the U.S. Environmental Protection Agency ...
Sensory hearing loss often occurs as a consequence of damaged or deficient cochlear hair cells. [disputed – discuss] Hair cells may be abnormal at birth or damaged during the lifetime of an individual. There are both external causes of damage, including infection, and ototoxic drugs, as well as intrinsic causes, including genetic mutations.
The basic structure and function of the fish's inner ear is similar to that of other vertebrates. Mammals share homologous genes with zebrafish that are known to affect inner ear structure and function. [17] In zebrafish, spontaneous and damage-induced hair cell regeneration has been demonstrated in the inner ear.
In mammalian outer hair cells, the varying receptor potential is converted to active vibrations of the cell body. This mechanical response to electrical signals is termed somatic electromotility; [13] it drives variations in the cell's length, synchronized to the incoming sound signal, and provides mechanical amplification by feedback to the traveling wave.
They are distinct from cilia and microvilli, but are closely related to microvilli. They form single "finger-like" projections that may be branched, with normal cell membrane characteristics. They contain actin. Stereocilia are found in the vas deferens, the epididymis, and the sensory cells of the inner ear.
For example, very curvy ear canals, narrow ear canals, or surgical ears are more prone to earwax buildup. When wax builds up, it causes muffled hearing, tinnitus, or aural fullness (plugged-up ...
The inner ear (internal ear, auris interna) is the innermost part of the vertebrate ear. In vertebrates , the inner ear is mainly responsible for sound detection and balance. [ 1 ] In mammals , it consists of the bony labyrinth , a hollow cavity in the temporal bone of the skull with a system of passages comprising two main functional parts: [ 2 ]
And while over-the-ear headphones can help close off more outside noise (than earbuds), it’s still important to keep the maximum volume at 70% or less to maintain hearing health. __wf_reserved ...