When sound waves enter our ears, they
pass along a short canal to the eardrum. The eardrum is a thin sheet of skin
that vibrates when it is hit by the sound waves. The small cavity on the other
side of eardrum (between the eardrum and the inner ear) has three tiny bones.
These bones are called the malleus (the hammer), the incus (the anvil), and the
stapes (the stirrup). The vibration of the ear drum moves these three tiny
bones. This movement sets in motion and a fluid in a spiral cochlea, while is
concerned to the tiny hairs in the cochlea send signal to our brain. A apart
from cochlea, our inner ear contains the semicircular canals (that also are
concerned with balance), and vestibule. The vestibule is an oval cavity that
contains the saccule and utricle, which communicate with the cochlea and inner
ear to our brain and is associated with our balance. The cochlear nerve, which
is a apart of the vestibular never, is associated with our hearing.
