User:Ashamuskan

Today everyone shout on you especially parents when we get less marks in tests.So,we have to hear it even if we don't want...In this running word we hear many sound but have you ever thought that how do we heard it. Actually the ears that we see in everyone are not used for hearing they are just useless external part of muscles according to evolution but may be used for collecting the sound waves. The work to hear is of internal ear. When the sound waves produced by any means in surrounding is collected by the external ear the waves passes through auditory tube.The sound waves then enters the middle ear and strikes the eardrum by which eardrum vibrates, it cause the movement in malleus which react the movement in another bone after malleus that is incus .Incus hammered the next and last bone state. Stape generates a signal to cochlea.The fluid inside cochlea sets in motion due to that signal.Due to this, audiotary cells are stimulated.The stimulus or impulses is carried to the spinal chord by the audiotary nerves,that is transfered to brain.In this way the brain reads the impulses and we reconize the sound waves. This process is very fast even fewer than milliseconds, so we can't feel it.