Explain 3 parts of ears

The Outer Ear

The outer ear includes:

Auricle (cartilage covered by skin placed on opposite sides of the head).

 Auditory canal (also called the ear canal).

.Eardrum outer layer (also called the tympanic membrane).

The outer part of the ear collects sound. Sound travels through the auricle and the auditory canal, a short tube that ends at the eardrum.

The Middle Ear The middle ear includes:

Eardrum cavity (also called the tympanic cavity) .

Ossicles (3 tiny bones that are attached)

Malleus (or hammer) – long handle attached to the eardrum .

Incus (or anvil) – the bridge bone between the malleus and the stapes stapes (or stirrup) – the footplate; the smallest bone in the body.

The Inner Ear The inner ear includes:

Oval window – connects the middle ear with the inner ear Semicircular ducts – filled with fluid; attached to cochlea and nerves; send information on balance and head position to the brain .

Cochlea – spiral-shaped organ of hearing; transforms sound into signals that get sent to the brain auditory tube – drains fluid from the middle ear into the throat behind the nose

The sound waves travel from the outer ear and in through the auditory canal, causing the eardrum, or tympanic membrane, to vibrate. This, in turn, causes the three small bones, known as the ossicles, or the hammer, the anvil and the stirrup, in the middle ear to move. The vibrations move via the oval window through the fluid in the cochlea in the inner ear, stimulating thousands of tiny hair cells. This results in the transformation of the vibrations into electrical impulses finally perceived by the brain as sound.

The ear consists of many small parts, but can be divided into three major parts:

• <a href="https://www.hear-it.org/The-outer-ear">The outer ear</a>
• <a href="https://www.hear-it.org/The-middle-ear-1">The middle ear</a>
• <a href="http://whttps//www.hear-it.org/The-inner-ear-1">The inner ear</a>