Working Of Human Ears (3D Animation) #workingofear #earanatomy #ear #humanear

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Sound waves enter the outer ear and travel through the ear canal, leading to the eardrum. Vibrations from the sound waves are then transmitted to three small bones in the middle ear – the malleus, incus, and stapes. These bones amplify the vibrations, sending them to the cochlea, a snail-shaped structure filled with fluid in the inner ear. The cochlea's basilar membrane, acting as a partition, plays a crucial role as the foundation for key hearing structures. When the fluid inside the cochlea ripples due to the vibrations, a traveling wave forms along the basilar membrane.

Hair cells, sensory cells on top of the basilar membrane, ride this wave. Those near the wide end of the cochlea detect higher-pitched sounds, while those closer to the center detect lower-pitched sounds. As the hair cells move, microscopic stereocilia, hair-like projections on top of them, bend when they bump against an overlying structure. This bending opens pore-like channels at the tips of the stereocilia, allowing chemicals to rush into the cells, generating an electrical signal.

The auditory nerve carries this electrical signal to the brain, where it is transformed into a recognizable and understandable sound. This intricate process from the outer ear to the brain allows us to perceive and interpret the diverse range of sounds in our environment.