Question

can anyone explain ear parts.

Answer 1

Hey
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The ear is the organ of hearing and balance. The parts of the ear include:

1) External or outer ear, consisting of:->Pinna or auricle. This is the outside part of the ear.->External auditory canal or tube. This is the tube that connects the outer ear to the inside or middle ear.->Tympanic membrane (also called the eardrum). The tympanic membrane divides the external ear from the middle ear.2)Middle ear (tympanic cavity), consisting of:->Ossicles. Three small bones that are connected and transmit the sound waves to the inner ear. The bones are called:MalleusIncusStapes->Eustachian tube. A canal that links the middle ear with the back of the nose. The eustachian tube helps to equalize the pressure in the middle ear. Equalized pressure is needed for the proper transfer of sound waves. The eustachian tube is lined with mucous, just like the inside of the nose and throat.Inner ear, consisting of:Cochlea (contains the nerves for hearing)Vestibule (contains receptors for balance)Semicircular canals (contain receptors for balance)
Hope this helps

Answer 2

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

The outer ear.

The middle ear.

The inner ear.


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). look my 1st pic...
One consequence of the configuration of the outer ear is selectively to boost the sound pressure 30- to 100-fold for frequencies around 3 kHz. This amplification makes humans most sensitive to frequencies in this range — and also explains why they are particularly prone to acoustical injury and hearing loss near this frequency. Most human speech sounds are also distributed in the bandwidth around 3 kHz.

THE MIDDLE EAR :- The middle ear is the part of the earbetween the eardrum and the oval window. The middle ear transmits sound from the outer ear to the inner ear. The middle ear consists of three bones: the hammer (malleus), the anvil (incus) and the stirrup (stapes), the oval window, the round window and the Eustrachian tube. look my 2nd pic...
Ordinarily, when sound waves in air strike liquid, most of the energy is reflected off the surface of the liquid. The middle ear allows the impedance matching of sound traveling in air to acoustic waves traveling in a system of fluids and membranes in the inner ear. This system should not be confused, however, with the propagation of sound as compression waves in liquid.

The middle ear couples sound from air to the fluid via the oval window, using the principle of "mechanical advantage" in the form of the "hydraulic principle" and the "lever principle".The vibratory portion of the tympanic membrane (eardrum) is many times the surface area of the footplate of the stapes(the third ossicular bone which attaches to the oval window); furthermore, the shape of the articulated ossicular chain is like a lever, the long arm being the long process of the malleus, the fulcrum being the body of the incus, and the short arm being the lenticular process of the incus. The collected pressure of sound vibration that strikes the tympanic membrane is therefore concentrated down to this much smaller area of the footplate, increasing the force but reducing the velocity and displacement, and thereby coupling the acoustic energy.

The middle ear is able to dampen sound conduction substantially when faced with very loud sound, by noise-induced reflex contraction of the middle-ear muscles.

THE INNER EAR :- The inner ear is the innermost part of the ear, which consist of the cochlea, the balance mechanism, the vestibular and the auditory nerve. ... Once the vibrations of the eardrum have been transmitted to the oval window, the sound waves continue their journey
into the inner ear. as my last pic...