Human Ear Structure And Function Pdf

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The ear is the organ of hearing and, in mammals, balance. In mammals, the ear is usually described as having three parts—the outer ear , the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal. Since the outer ear is the only visible portion of the ear in most animals, the word "ear" often refers to the external part alone. The inner ear sits in the bony labyrinth , and contains structures which are key to several senses: the semicircular canals , which enable balance and eye tracking when moving; the utricle and saccule , which enable balance when stationary; and the cochlea , which enables hearing.

Ear anatomy

The major task of the ear is to detect, transmit and transduce sound. Another very important function of the ear is to maintain our sense of balance. The best way to describe the functioning of the ear is to describe the path which the sound waves take on their way through the ear. In the video you can see the journey of the sound waves through the ear. 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.


will deal mainly with the ear, first its structure and then its function, for it is the ear human hearing is from 0 to dB(A), before sound becomes uncomfortably.


Anatomy and physiology of the ear

Click Image to Enlarge. External auditory canal or tube. This is the tube that connects the outer ear to the inside or middle ear. Tympanic membrane eardrum. The tympanic membrane divides the external ear from the middle ear.

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Anatomy and physiology of the ear

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The following article is written to provide a general understanding of the structures within the auditory system and how they function. The auditory system is comprised of three components; the outer, middle, and inner ear, all of which work together to transfer sounds from the environment to the brain. Pinna The pinna or auricle is a concave cartilaginous structure, which collects and directs sound waves traveling in air into the ear canal or external auditory meatus. Ear Canal The ear canal or external auditory meatus is approximately 1.

Principles of Hearing Aid Audiology pp Cite as. The ear Figure 2. Unable to display preview. Download preview PDF. Skip to main content. This service is more advanced with JavaScript available. Advertisement Hide.


Pinna. = outer portion of ear used to collect sound waves. 2. Auditory Canal = tube that sound travels down. 3. Ear Drum. = membrane that sends sound waves​.


Human ear - structure & working

Structure of human ear

Human ear , organ of hearing and equilibrium that detects and analyzes sound by transduction or the conversion of sound waves into electrochemical impulses and maintains the sense of balance equilibrium. The human ear, like that of other mammals , contains sense organs that serve two quite different functions: that of hearing and that of postural equilibrium and coordination of head and eye movements. Anatomically, the ear has three distinguishable parts: the outer, middle, and inner ear. The outer ear consists of the visible portion called the auricle , or pinna, which projects from the side of the head, and the short external auditory canal , the inner end of which is closed by the tympanic membrane , commonly called the eardrum. The function of the outer ear is to collect sound waves and guide them to the tympanic membrane. The middle ear is a narrow air-filled cavity in the temporal bone. It is spanned by a chain of three tiny bones —the malleus hammer , incus anvil , and stapes stirrup , collectively called the auditory ossicles.

The ear is the sense organ that enables us to hear. Hearing can be defined as the perception of sound energy via the brain and central nervous system. Hearing consists of two components: identification of sounds what the sound is and localisation of those sounds where the sounds are coming from. The ear is divided into three main parts — the outer ear , the middle ear , and the inner ear. The inner ear is filled with fluid. The inner ear also contains the receptors for sound which convert fluid motion into electrical signals known as action potentials that are sent to the brain to enable sound perception.

 Да бросьте вы это, - проворчал Джабба.  - Хватаетесь за соломинку. - Может быть, и нет, - сказала Сьюзан.  - Во множестве шифров применяются группы из четырех знаков.

Прямо перед ним, откинувшись на груду старых подушек, лежал пожилой человек с ярко-белой гипсовой повязкой на правом запястье. ГЛАВА 21 Голос американца, звонившего Нуматаке по прямой линии, казался взволнованным: - Мистер Нуматака, в моем распоряжении не больше минуты. - Хорошо. Полагаю, вы получили обе копии ключа.

У нас вирус. Я звоню Джаббе. Когда он попытался обойти Стратмора, тот преградил ему дорогу. Лестничная площадка, на которой они стояли, была совсем крохотной. Они сцепились.

Судя по той увлеченности, с которой молодой профессор говорил о преподавательской работе, из университета он не уйдет. Сьюзан решила не заводить деловых разговоров, чтобы не портить настроение ни ему ни. Она снова почувствовала себя школьницей. Это чувство было очень приятно, ничто не должно было его омрачить.

Раздался приглушенный звук выстрела. Мимо. Он резко свернул влево и запетлял по дороге в надежде сбить преследователя и выиграть время. Все было бесполезно.

Но Беккера там не оказалось, и он тихо застонал от злости. Беккер, спотыкаясь и кидаясь то вправо, то влево, продирался сквозь толпу. Надо идти за ними, думал .

Anatomy and Physiology of the Ear

Несмотря на солидный заработок, Танкадо ездил на службу на стареньком мопеде и обедал в одиночестве за своим рабочим столом, вместо того чтобы вместе с сослуживцами поглощать котлеты из телятины и луковый суп с картофелем - фирменные блюда местной столовой. Энсей пользовался всеобщим уважением, работал творчески, с блеском, что дано немногим. Он был добрым и честным, выдержанным и безукоризненным в общении.

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  1. Criblafihou

    Human ear, organ of hearing and equilibrium that detects and analyzes sound by transduction and maintains the sense of balance. Anatomically, the ear has.

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