The ear consists of three main parts - the outer, middle, and inner ear. The outer ear includes the auricle and external auditory canal. The middle ear contains three small bones called the ossicles that conduct sound from the outer ear to the inner ear. The inner ear contains the cochlea, which is a snail-shell shaped organ that converts sound waves into neural signals for the brain, and the vestibular system which helps with balance and spatial orientation.

1. Ear structure
A sensory organ

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

3. OUTER EAR
1) Auricle
2) 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
1. the malleus (hammer)
2. incus (anvil)
3. stapes (stirrup).
Auditory 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:
1. 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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