How Does the Ear Work?

The ear is made up of three main sections: The outer ear, the middle ear and the inner ear. The Outer Ear Sounds are received by our outer ear, which includes the pinna (auricle or outer ear) and the ear canal (external acoustic meatus). The pinna captures sounds in the environment and increases the loudness of those pitches that make it easier to understand speech. The ear canal tunnels the sound to the tympanic membrane (eardrum) and helps to protect the structures of the middle ear. The Middle Ear The sound waves hit the tympanic membrane (eardrum) and cause it to vibrate. These eardrum vibrations then cause movements of the three tiny bones in the middle ear called the malleus (hammer), incus (anvil) and stapes (stirrup). Movement of these three tiny bones helps to deliver the sound vibrations to the inner ear. Delivering the sound from a relatively large eardrum to a smaller oval window (entrance way to the inner ear) also results in an amplification of the sound. The Inner Ear ...

The ear is made up of three main sections: The outer ear, the middle ear and the inner ear. The Outer Ear Sounds are received by our outer ear, which includes the pinna (auricle or outer ear) and the ear canal (external auditory meatus). The pinna captures sounds in the environment and increases the loudness of those pitches that make it easier to understand speech. The ear canal tunnels the sound to the tympanic membrane (eardrum) and helps to protect the structures of the middle ear. The Middle Ear The sound waves hit the tympanic membrane (eardrum) and cause it to vibrate. These eardrum vibrations then cause movements of the three tiny bones in the middle ear called the malleus (hammer), incus (anvil) and stapes (stirrup). Movement of these three tiny bones helps to deliver the sound vibrations to the inner ear. Delivering the sound from a relatively large eardrum to a smaller oval window (entrance way to the inner ear) also results in an amplification of the sound. The Inner Ear ...  more

The ear has three main parts: the outer, middle, and inner ear. The outer ear (the part you can see) opens into the ear canal. The eardrum separates the ear canal from the middle ear. Small bones in the middle ear help transfer sound to the inner ear. The inner ear contains the auditory (hearing) nerve, which leads to the brain. Any source of sound sends vibrations or sound waves into the air. These funnel through the ear opening, down the ear canal, and strike your eardrum, causing it to vibrate. The vibrations are passed to the small bones of the middle ear, which transmit them to the hearing nerve in the inner ear. Here, the vibrations become nerve impulses and go directly to the brain, which interprets the impulses as sound: music, a slamming door, a voice, etc. When noise is too loud, it begins to kill the nerve endings in the inner ear. As the exposure time to loud noise increases, more and more nerve endings are destroyed. As the number of nerve endings decreases, so does your ...  more

The structure of the ear can be divided into three main parts: the outer ear or pinna, the middle ear and the inner ear. The outer structure of the ear is responsible, in part, for helping us to place the original location of a sound, be it ahead or behind, above or below us. It also helps to funnel and focus sound waves on their way to the middle ear and auditory canal. The middle ear contains the auditory canal, which terminates in the eardrum, or tympanic membrane. Attached to the other side of the eardrum, in a small space of air, are three tiny bones or ossicles, the malleus, incus and stapes (or hammer, anvil and stirrup) which then attach to a fluid-filled structure called the cochlea of the inner ear at a point called the oval window. It is in the cochlea that the vibrations transmitted from the eardrum through the tiny bones are converted into electrical impulses sent along the auditory nerve to the brain. The inner ear, which is surrounded by bone, also contains ...  more

In very basic terms, the ear is made up of the outer ear, the middle ear and the inner ear. The part we can see is the outer ear which also includes the ear canal. It functions to capture sound energy and funnel it to the middle ear. The middle ear's job is to mechanically transform sound waves and send the signals on to the inner ear (cochlea) where auditory sensory cells are located. From the cochlea, sound information is transmitted to the auditory nerve and on up to the brain. Here is how the ear works normally: : • The sound waves cause the eardrum to vibrate which sets the three tiny bones in the middle ear into motion. • The motion of these bones causes the fluid in the inner ear or cochlea to vibrate. • The vibration of the inner ear fluid causes the hair cells in the cochlea to move. The hair cells change this movement into electrical impulses. • These electrical impulses are transmitted by the hearing (auditory) nerve to the brain where they are interpreted as sound. Damage ...  more

The ear is one of the most wonderful instruments in our body. Without our having to do any tuning, it can pick up the tiny tick of a watch one moment and the roar of an explosion the next. The ear, however, is not the only thing we need to be able to hear. The process of hearings begins with sound. Waves of air, which we call sound waves, strike on the eardrum. We can neither see nor feel these waves, but the ear is so delicate that the slightest vibration is caught and passed on to the brain. Only when such waves reach the brain do we actually hear. The ear is made up of three main parts: an outer ear, a middle ear, and an inner ear. Certain animals can move their outer ear forward to catch sounds more easily. But since we cannot move our outer ear, it doesnt really help us much in hearing. When sound waves enter the outer ear, they travel down a canal. At the end of this canal is a thin skin, stretched tightly across a tube. This skin separates the outer from the middle ear, and it ...  more

In general, the ear consists of three major sections: the outer, middle and inner ear. Sound is collected by the outer ear and funneled down the ear canal (outer ear). The sound vibrations cause movement of the eardrum and the chain of three tiny bones connected to it (middle ear). The middle ear system serves to intensify the energy of the sound vibrations and delivers them to the cochlea (inner ear). Inside the cochlea are thousands of tiny hair-like cells that connect to fibers of the hearing (acoustic) nerve. Sound vibrations entering the cochlea cause a wave to travel through the fluid-filled organ of hearing. This wave causes movement of the hair cells which then generate electro-chemical signals which travel through the acoustic nerve to the brain where they are recognized as sounds.  more

Anatomically, an ear is a vertebrate organ of hearing responsible for sensing and collecting sounds as well as maintaining equilibrium. The ear is divided into three components, the outer ear (pinna), the middle ear, and the inner ear. Each component of the ear has its unique functions. The outer or external ear The external ear consist of two portions, the first being the pinna, the skin covered flabby cartilage of the ear visible on both sides of the head. The basic function of the outer ear or pinna is to protect the eardrum (tympanic membrane). The outer ear also functions to collect sound waves to the eardrum through the ear canal. The second component of the external ear is the auditory ear canal or meatus. There are modified sweat glands that secrete ear wax in the ear canal. If ear wax is excessive, the ear drum can be damaged or lead to blockage of the transmission of sound. Unlike those of animals, human ears are usually of same size. They only grow from infancy up until ...  more

The ear is made up of three main sections: • The Outer Ear • The Middle Ear • The Inner Ear Sounds from the outside world are picked up by the outer ear, which is made up of the pinna and the ear canal. As the sound waves enter the ear, the ear canal (1) serves to increase the loudness of those pitches that make it easier to understand speech. At the same time the ear canal protects another important part of the ear: the eardrum (2) - a flexible, circular membrane which vibrates when touched by sound waves. The sound vibrations continue their journey into the middle ear, which contains three tiny bones called the ossicles(3-5), which are also known as the hammer, anvil and stirrup. These bones form the bridge from the eardrum into the inner ear. They increase and amplify the sound vibrations even more, before safely transmitting them on to the inner ear via the oval window. The Inner Ear, or cochlea (8), resembles the circular shell of a snail, and houses a system of tubes which are ...  more

Sound waves are channeled by the external ear, or pinna, through the external canal. causing the tympanic membrane to vibrate. This vibration activates the tiny bones of the inner ear-the hammer,anvil and stirrup. their mechanical vibrations are passed along from the oval window to the cochlea, where they set in motion the fluid in its canal. Tiny hair cells lining the coiled basilar membrane within the cochlea bend as the fluids move, stimulating nerve endings attached to them. The mechanical energy is then transformed into neural energy and sent to the brain.  more