How do we hear

Sound consists of vibrations of the air (known as soundwaves). The ear is able to pick
up these vibrations and convert them into electrical signals that are sent to the brain.
The ear consists of three parts: the outer ear, middle ear and inner ear. Please see the
diagram, detailed above.

The outer ear is the visible part of the ear on either side of the head and includes the
ear canals that go into the head. The fleshy parts of the outer ear act as "collectors"
of sound waves, which then travel down the ear canal to the eardrum. This is a
membrane of tissue that separates the outer ear from the middle ear.

The sound waves cause the eardrum to vibrate. This vibration is passed on to the
middle ear, which consists of three small bones called the "ossicles", which amplify and
conduct the vibrations of the ear drum to the inner ear.

The inner ear consists of an organ called the cochlea, which is shaped like a snail's
shell. The cochlea contains tiny cells called hair cells which move in response to the
vibrations passed from the ossicles. The movement of these hair cells generates an
electrical signal that is transmitted to the brain through the auditory nerve. In the
brain, these signals are translated into meaningful information, such as language or
music with qualities like volume and pitch.