How are we able to hear sounds?
Answers
Sound waves travel into the ear canal until they reach the eardrum. The eardrum passes the vibrations through the middle ear bones or ossicles into the inner ear. ... Hair cells change the vibrations into electrical signals that are sent to the brain through the hearing nerve.
☆ Our ears are the sensory organs that help us to hear sound. We can feel only one part of the ear - the outer ear.
☆ The Outer Ear - It consist of the pinna and the eartube. The eardrum is a tightly streched membrane that seperates the outer ear from the middle ear.
☆ The Middle Ear - It consist of three tiny interlocked bones. The innermost bone is connected to the inner ear by a tiny window.
☆ The Inner Ear - It consists coiled organ of hearing, semicircular tubes called the organ of balance and the auditory nerves.
When an object produces sound, the sound is collected by the pinna and passed to the eartube.
The sound then strikes the eardrum that makes the eardrum vibrate with the same frequency.
This then makes the delicate interlocked bones to vibrate.
The vibrations are converted into signals and then is sent to the auditory nerves.
This signals reaches the brain due to which we hear sound.