Hearing problems and testing test study guide

The study of sound is known as

acoustics

if we recognize that the sound we hear is an airplane overhead we are using our

auditory perception

Acoustic. energy refers to sound waves traveling in

air

when an object is struck, what moves to areas of compression and rarefaction in the form of acoustic waves

air molecules

A large bell with a lot of mass will vibrate at a _____compared to a smaller bell with less mass

lower frequency

Choose the best answer to fill-in-the-blanks. When a guitar string is plucked it ______ whi h creates a disturbance of ______

Vibrates; air molecules

Areas of high pressure, or when air molecules are densely packed together, meaning that air molecules are in a state of

Condensation

Areas of low pressure, or when air molecules are sparse, are known as areas of

Rarefaction

0 degrees

1000 Hz

We perceive that 12,000 Hz is higher in _____ than 200 Hz

pitch

The psychological correlate of intensity is ______ another way to say this could be, our perception of intensity is _____

loudness

The inverse square law states that for every doubling of distance, the sound intensity decreased by _____

6 dB

The study of sound is known as

acoustics

You are driving your car at a constant velocity. A plush toy is in the front passenger seat. You are using a seatbelt. The toy is not buckled into their seat. You hit the breaks suddenly and the toy goes forward and falls on the floor. This is a demonstration of the concept of

intertia

Any point on a sine wave is known as the

phase

90 degrees

The three main parts of the ear are

outer, middle, inner

The resonant frequency of the pinna is approximately

1.5k Hz

Our pinnas help us

localize

The ____ is a structure that extends from the pinna to the tympanic membrane

external auditory canal

One function of the middle ear is to

Overcome the impedance mismatch between the outer and inner ear

A healthy tympanic membrane is translucent. What is the name of the landmark where the malleus attaches to the tympanic membrane?

umbo

What substance produced by glands in the ear canal can help protect your ears against insects

cerumen

Who is more likely to have a higher resonant frequency of the external auditory canal a newborn or an adult

newborn

Name the three ossicles

malleus, incus, stapes

The difference in length between the manubriym and long process of the incus creates a/ an ______ action that allows for an increase in pressure at the cochlea

lever

The funnel shape of the tympanic membrane creates more force on the malleus than a flat surface would. This results in a ___ increase in sound pressure level.

6 dB

What is the name of the hand-held instrument that is used to look in the external auditory canal and visualize the tympanic membrane?

otoscope

Helix

concha cavum

Antitragus

annulus

antihelix

G

B-helix

C-triangular fossa

D-tragus

E- antitragus

Crus of helix

manubrium

what is the green arrow pointing to, the blue, the red?

footplate of the stapes

manubrium of the malleus

the incus