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Ear Structure And Function Pdf

ear structure and function pdf

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Published: 04.06.2021

The ear is the organ of hearing and, in mammals, balance.

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.

Human Ear: Structure and Functions (With Diagram)

The pinna is a projecting elastic cartilage covered with skin. Its most prominent outer ridge is called the helix. The lobule is the soft pliable part at its lower end composed of fibrous and adipose tissue richly supplied with blood capillaries. It is sensitive as well as effective in collecting sound waves. It is a tubular passage supported by cartilage in its exterior part and by bone in its inner part. The meatus canal is internally lined by hairy skin stratified epithelium and ceruminous glands wax glands.

Fine Structure and Function of the Ear

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.

Anyone can learn for free on OpenLearn, but signing-up will give you access to your personal learning profile and record of achievements that you earn while you study. Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available. Figure 1 is a diagram of the human ear. The outer ear consists of the visible part of the ear or pinna , the external auditory canal meatus , and the tympanic membrane tympanum or eardrum. The human pinna is formed primarily of cartilage and is attached to the head by muscles and ligaments.

Human Ear: Structure and Functions (With Diagram)

human ear structure and function pdf

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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 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 ear is an organ of hearing and an organ of balance. It consists of the outer, middle, and inner ear. The outer ear includes the pinna the part you see that is made of cartilage and covered by skin, fur, or hair and the ear canal. The pinna is shaped to capture sound waves and funnel them through the ear canal to the eardrum. The pinnae are mobile and can move independently of each other, allowing horses to locate multiple sounds at the same time.

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The pinna is a projecting elastic cartilage covered with skin. Its most prominent outer ridge is called the helix. The lobule is the soft pliable part at its lower end composed of fibrous and adipose tissue richly supplied with blood capillaries. It is sensitive as well as effective in collecting sound waves. It is a tubular passage supported by cartilage in its exterior part and by bone in its inner part. The meatus canal is internally lined by hairy skin stratified epithelium and ceruminous glands wax glands. The latter are modified sweat glands which secrete a waxy substance— the cerumen ear wax which prevents the foreign bodies entering the ear.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Webster Published Medicine, Biology American zoologist. The acoustic portions of the mammalian ear display greater morphological diversity in peripheral than in central portions.

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1 Comments

  1. Doug C.

    14.06.2021 at 05:47
    Reply

    This chapter will deal mainly with the ear, first its structure and then its function, for it is the ear that is mainly at risk from hazardous sounds. The ears are paired.

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