Auditory system

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The auditory system is the sensory system for the sense for hearing.

Structure of the ear[change | edit source]

Anatomy of the human ear. (The length of the auditory canal is exaggerated in this image)

Outer ear[change | edit source]

The outer ear is the folds of cartilage surrounding the ear canal. They are called the pinna.

Middle ear[change | edit source]

Sound waves travelling through the ear canal will hit the tympanum, or eardrum. The malleus (hammer), incus (anvil) and stapes (stirrup). These bones convert the waves to high pressure vibrations. They are then converted to nerve impulses in the cochlea.

Inner ear[change | edit source]

The inner ear is made mostly of the cochlea.

The cochlea[change | edit source]

The cochlea is made up of three pieces, and is filled with liquid. It transforms sound waves to electric signals in neurons.

Other websites[change | edit source]