Ear Anatomy External

The external ear functions to collect and amplify sound which then gets transmitted to the middle ear. The external ear can be divided functionally and structurally into two parts.

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The chambers are full of fluid which vibrates when sound comes in and causes the small hairs which line the membrane to vibrate and send electrical impulses to the brain.

Ear anatomy external. Sound causes the eardrum and its tiny attached bones in the middle portion of the ear to vibrate. Ear canal the ear canal starts at the outer ear and ends at the ear drum. The skin of the ear canal is very sensitive to pain and pressure.

Sound funnels through the pinna into the external auditory canal a short tube that ends at the eardrum tympanic membrane. The asymmetric shape of the external auricle introduces delays in the path of sound that assist in sound localization. Picture of the ear.

The cochlea which is the hearing portion and the semicircular canals is the balance portion. The outer ear external ear or auris externa is the external portion of the ear which consists of the auricle also pinna and the ear canal. The auricle or pinna and the external acoustic meatus which ends at the tympanic membrane.

Auricle pinna auricle is composed of thin plate of elastic cartilage covered by layer of skin. The auricle and external acoustic meatus or external auditory canal compose the external ear. The funnel like curves of auricle collects sound wave and direct them to middle ear.

Ear anatomy inner ear. The canal is approximately an inch in length. External ear is composed of auricle and external auditory canal meatus.

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. Under the skin the outer one third of the canal is cartilage and inner two thirds is bone. It gathers sound energy and focuses it on the eardrum tympanic membrane.

The outer ear is called the pinna and is made of ridged cartilage covered by skin. By teachmeseries ltd 2019. Ear anatomy outer ear.

The outer ear includes. The cochlea is shaped like a snail and is divided into two chambers by a membrane. Sound travels through the auricle and the auditory canal a short tube that ends at the eardrum.

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