Question 2 of 21

Which of the following famous individuals was deaf?

... Juliette Low began to lose her hearing at age 25 due to a medical treatment. Subsequently, she completely lost the hearing in the other ear due to infection.

Question 3 of 21

The sense of hearing differs from taste, smell and sight because hearing is ________.

... Hearing is a mechanical process, involving only sound waves and parts of the ear.

Question 4 of 21

Which sound is loudest?

... The decibel levels vary from painful to very loud: fireworks (150 dB), jackhammer (130 dB) and chainsaw/MP3 player (both 110 dB).

Question 5 of 21

Digital hearing aids are superior to analog hearing aids because the digital aids _______.

... Digital hearing aids make it possible to hear important sounds like voices better because background noises are not amplified to the same extent.

Question 6 of 21

Prolonged exposure to loud noises can cause hearing loss because it can _________.

... Hair cells change sound energy into electrical energy, which then goes to the brain. If they are damaged, they cannot be repaired.

Question 7 of 21

Congenital deafness can be caused by _______.

... Many conditions can produce congenital deafness. Birth defects can lead to malformed ear structure. More than 400 genetic disorders can affect hearing. Diseases such as rubella and herpes, when transferred from mother to fetus, can result in infant deafness.

Question 8 of 21

Development of the modern hearing aid was facilitated by the inventions of _________.

... Components in Alexander Graham Bell's telephone contributed to the development of the hearing aid, as did Thomas Edison's carbon transmitter.

Question 9 of 21

How many infants are born with hearing loss?

... According to Boys' Town National Research Hospital, one in 300 babies are born with hearing loss.

Question 10 of 21

What type of hearing aid can improve the widest range of hearing loss?

... A "behind the ear" hearing aid can help individuals with hearing loss ranging from mild to profound. An "in the ear" aid can help mild to severe loss; the others are for mild to moderate hearing loss.

Question 11 of 21

According to the American Speech-Language Association, which of the following is NOT a warning sign that a child may have a hearing loss?

... There are several behaviors that should prompt parents to have their children evaluated by an audiologist, including delayed speech and not answering when spoken to. Others signs include hard-to-understand speech from the child, inconsistent reaction to sounds, repetitive use of "huh?" and a seeming inability to follow directions.

Question 12 of 21

The youngest age approved by the FDA for receiving a cochlear implant is __________.

... One type of cochlear implant has been approved for babies one year old.

Question 13 of 21

Results from federal surveys indicate that, during the last 30 years, hearing loss in the U.S. has ________.

... Based on data of citizens three years old and up, from 1971 to 2000 the number of individuals with hearing loss increased from 13.2 million to 24.2 million.

Question 14 of 21

An individual can suffer hearing loss after a severe case of __________.

... Several diseases can lead to hearing loss, including mumps, measles, meningitis and scarlet fever.

Question 15 of 21

The structure of the external part of the ear ______.

... The fleshy part attached to the side of your head (commonly referred to as the "ear") is the pinna, which allows the listener to perceive the direction from which a sound comes.

Question 16 of 21

Cochlear implants are different from hearing aids because implants _________.

... Cochlear implants avoid the malfunctioning parts of the ear and stimulate the auditory nerve.

Question 17 of 21

The job of the cochlea is to _________.

... Found in the inner ear, the cochlea is filled with fluid, which shifts due to vibrations. The fluid moves thousands of tiny hair cells that change the vibrations into electrical signals that are then transmitted to nerve cells.

Question 18 of 21

When cared for, most hearing aids will last ________.

... Hearing aids generally last five to seven years, if maintained properly.

Question 19 of 21

The bones in the middle ear have the distinction of being the _________ bones in the body.

... The ossicles (hammer, anvil and stirrup) are the tiniest bones in the human body.

Question 20 of 21

"Baha" hearing aids are surgically attached to ___________.

... A baha hearing aid, approved by the FDA in 1996 for mixed hearing loss, is directly connected to bones in the middle ear.

Question 21 of 21

A ruptured eardrum usually _______.

... A torn or perforated ear drum will normally heal on its own within a few weeks.

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