General Description of the Ear Essay

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General Description of the Ear Essay

General description of your topic (ex: what are topical medication) Different forms and routes 5 different medications in your topic and their drug class (therapeutic and pharmacologic) Why are they used? Rate of absorption? Side effects/adverse reactions

considerations? How to administer medication (s)? 4 credible resources (articles, hand-outs, inserts) for patient teaching. *Make sure to site your sources using APA formatting Power points 8-12 slidesYou must proofread your paper. General Description of the Ear Essay. But do not strictly rely on your computer’s spell-checker and grammar-checker; failure to do so indicates a lack of effort on your part and you can expect your grade to suffer accordingly. Papers with numerous misspelled words and grammatical mistakes will be penalized. Read over your paper – in silence and then aloud – before handing it in and make corrections as necessary. Often it is advantageous to have a friend proofread your paper for obvious errors.

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Handwritten corrections are preferable to uncorrected mistakes.General Description of the Ear Essay. Use a standard 10 to 12 point (10 to 12 characters per inch) typeface. Smaller or compressed type and papers with small margins or single-spacing are hard to read. It is better to let your essay run over the recommended number of pages than to try to compress it into fewer pages.Likewise, large type, large margins, large indentations, triple-spacing, increased leading (space between lines), increased kerning (space between letters), and any other such attempts at “padding” to increase the length of a paper are unacceptable, wasteful of trees, and will not fool your professor.The paper must be neatly formatted, double-spaced with a one-inch margin on the top, bottom, and sides of each page. When submitting hard copy, be sure to use white paper and print out using dark ink. If it is hard to read your essay, it will also be hard to follow your argument.Topic Ear. General Description of the Ear Essay.

The ear is an integral part of the mammalian body, and a fundamental aspect of communication. It plays a pivotal role in detecting and responding to stimuli within the environment. The main function of the ear is to pick up sound waves in the environment. Mammals utilise ears for many various aspects including hearing, balance and communication. Ears are essential for survival, as they allow for the detection of sound, hence allowing mammals to communicate and respond to danger in the environment. The ear is made up of three different sections: the outer ear, the middle ear, and the inner ear. The ear functions by collecting sound waves in the external auditory canal, from where it subsequently travels through the middle and.

It separates the outer ear from the middle ear.General Description of the Ear Essay.. The tympanic membrane is a thin, cone shaped membrane which vibrates in the presence of a sound, initiating the process of hearing. It vibrates with the same frequency as the sound wave that hits it, and passes these vibrations onto the middle ear. The middle ear consists of three small delicate bones called ossicles. They are the malleus (hammer), the incus (anvil) and the stapes (stirrup). They amplify the vibrations from the tympanic membrane, and transfer these vibrations into the oval window in the inner ear. The malleus is attached to the tympanic membrane, from which vibrational sound pressure motion is passed. The incus is connected to both the other bones. The stapes is attached to the membrane of the oval window, and is the smallest bone in the body. (Refer to image 2 in the appendix for a diagram of the ossicles.) The middle ear diverges into the Eustachian Tube. It is the tube that connects the middle ear to the nose and the throat (Pharynx). By connecting the middle ear to an air filled space such as the Pharynx, the Eustachian tube is able to equalise the pressure between the eardrum and the middle ear when air passes through the open tube. This often happens when a person swallows, or yawns, as this process opens the tube. The inner ear consists of the oval window, round window, cochlea, organ of corti and the auditory nerve, and is the most. General Description of the Ear Essay.

Ears are delicate and sensitive organs. They detect minute changes in air pressure produced by sounds in the environment and send the information to the brain for processing. The ear is also important for maintaining balance.

Our sense of hearing is incredibly versatile — it can detect the quietest of sounds, it can determine whether a noise came from far or near, and it can pick out a specific sound from the background noise of life.

In this article, we will explain the anatomy of the ear, how hearing works, and talk about hearing loss.

How do we hear?

The ear can be split into three sections: the outer, middle, and inner ear. Each section plays a distinct role in hearing.

Diagram of the anatomy of the ear — A diagram of the anatomy of the ear.

Outer ear

Also called the pinna or auricle, the outer ear is the part that is visible. Its primary job is to collect as much sound from the surrounding area as it can.

An external sound starts its journey here as it enters a thin passage called the ear canal. General Description of the Ear Essay.

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Middle ear

The middle ear amplifies incoming sound. It does this with the help of the eardrum, which is a thin membrane also known as the tympanic membrane.

The eardrum separates the outer ear from the middle ear and helps to transmit sound vibrations to the inner ear.

The sound is amplified by three tiny bones called ossicles. The names of the ossicles are:

The malleus (or hammer): This is attached to the eardrum.
The incus (or anvil): This is attached to the malleus.
The stapes (or stirrup): This, the smallest bone in the body, is attached to the incus.

When sound waves reach the eardrum, it vibrates. This vibration moves the ossicles, transmitting sound further into the ear.

The Eustachian tubes are thin, mucous-lined passages that help to maintain a stable pressure in the middle ear, so that sound waves are correctly transmitted. These tubes connect the middle ear to the back of the throat. When you “pop” your ears, the sound you hear is created by air being forced into the Eustachian tubes. General Description of the Ear Essay.

Inner ear

Once a sound has been amplified by the ossicles, the vibration enters the cochlea. This is a small, curled tube that looks like a snail’s shell and is located in the inner ear. The cochlea is filled with liquid. It has an internal membrane, called the basilar membrane, which is covered in hair cells. Sound causes the fluid to rise and fall, moving the hair cells up and down as they “ride the wave.”

Each hair cell has stereocilia — tiny, hair-like projections — along its top. As the hair cells move up and down, the stereocilia bump into structures above and are bent over. This opens up ion channels, creating a signal that is sent to the brain.

Different pitches — higher or lower — activate hairs in different parts of the cochlea. From their position, the brain can gather information about the pitch of the sound.

The information about the sound is sent from the cochlea along the auditory, or cochlear, nerve. It reaches the medulla, which is part of the brain stem. The brain stem is the part of the brain located closest to the back of the neck.

The auditory nerve also carries information from the brain back to the cochlea. The fibers of this nerve help us to suppress sounds that we are not interested in, allowing us to concentrate on just one sound among many. For instance, when having a conversation in a busy room, it helps us to focus on the voice of one person and ignore the others. General Description of the Ear Essay.

General Description of the Ear Essay

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