Ear structure

Ear structure

1. Ear structure A sensory organ

2. Parts of ear Ear consists of three parts Outer Middle inner

3. OUTER EAR Auricle Short external auditory canal AURICLE Short external auditory canal

4. helix scapha Anti helical Anti helix Anti tragus tragus lobule concha ANATOMY OF OUTER EAR Fossa

5. Middle Ear It consists of three bones the malleus (hammer ) incus (anvil ) stapes (stirrup ). A uditory ossicles This ossicular chain conducts sound from the tympanic membrane to the inner ear. It is a complicated system of fluid-filled passages and cavities located deep within the rock-hard petrous portion of the temporal bone.

6. Tympanic membrane Auditory ossicles Middle ear Eustachian tube Temporal bone malleus incus stapes

7. INNER The inner ear consists of two functional units : the vestibular apparatus, consisting of the vestibule and semicircular canals, which contains the sensory organs of postural equilibrium 2. the snail-shell-like cochlea, which contains the sensory organ of hearing. These sensory organs are highly specialized endings of the eighth cranial nerve, also called the vestibule o cochlear nerve

8. Semicircular cannals vestibule cochlea Vestibulocochlear nerves Oval window

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