Ear Flashcards

1
Q

The _______ ear is designed to _______ air ________ (sound) into the head.

When performing an _____-_______ exam, we must pay attention to ear __________, specifically _______ and __________.

Malformations in ear development usually correlate with a lack in _________ development (syndrome).

A

The outer ear or external ear is designed to funnel air vibrations into the head.

When performing an oral-facial exam, we must pay attention to ear development, specifically shape and placement.

Malformations in ear development usually correlate with a lack in cognitive development.

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2
Q

The outer ear structure is known as the _______.

There are __ main parts of the _______; the tragus, helix, anti_______, and the _____ acoustic _____.

The tragus contains the _________ notch and the __________.

The _______ is the outer _______ of the ear and contains the ______, the ________ tubercle (tubercle of Darwin), and the ear ______.

The external _________ meatus or ear canal contains the concha of ________.

A

The outer ear structure is known as the pinna.

There are 4 main parts of the pinna; the tragus, helix, antihelix, and the external acoustic meatus.

The tragus contains the intertragic notch and the antitragus.

The helix is the outer ridge of the ear and contains the crux, the auricular tubercle (tubercle of Darwin, and the ear lobe.

The external acoustic meatus or ear canal contains the concha of auricle.

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3
Q

The middle ear is composed of the _________ membrane and the _________ chain.

The tympanic _________ sits ________ to the exterior _________ meatus at an angle.

The _________ _______ is composed of the ____, the incus, and the _______.

These bones transmit ________ that hit the _______ and are considered the most important part of the middle ear when it comes to hearing.

A

The middle ear is composed of the tympanic membrane and the ossicular chain.

The tympanic membrane sits medially to the exterior auditory meatus at an angle.

The ossicular chain is composed of the malleus, the incus, and the stapes.

These bones transmit vibrations that hit the eardrum and are considered the most important part of the middle ear when it comes to hearing.

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4
Q

The _ bones of the _________ chain are connected by _________ joints.

The middle ear is connected to the _________, specifically the _________ tube and the ________ tuberius.

The eustachian _______ is designed to ______ the middle ear so there is constant air exchange and also to ________ the middle ear.

If there is no ________ then massive ________ builds pushing the eardrum out.

The middle ear is lined by _______/epithelium that produces ________ to expel foreign objects when you are ______.

A

The 3 bones of the ossicular chain are connected by synovial joints.

The middle ear is connected to the nasopharynx, specifically the eustachian tube and the torus tuberius.

The eustachian tube is designed to aerate the middle ear so there is constant air exchange and also to drain the middle ear.

If there is no drainage then massive pressure builds pushing the eardrum out.

The middle ear is lined by mucosa/epithelium that produces mucus to expel foreign objects when you are sick.

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5
Q

The _______ is pressed up against the surface of the ________ membrane.

The ______ of light is always in the same place for everyone, if missing it is an indication of _______ or ________.

The foot of the _______ is up against the oval ________.

A

The malleus is pressed up against the surface of the tympanic membrane.

The cone of light is always in the same place for everyone, if missing it is an indication of disease or disorder.

The foot of the stapes is up against the oval window.

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6
Q

The oval window is the counterpart of the ________.

Sound waves come into the external _______, hit the _______ making it vibrate and causing the ossicular _______ to vibrate.

These ________ end at the _______, transferring to the oval window.

The other side of the oval window is the ______ ear that is filled with _______.

A

The oval window is the counterpart of the eardrum.

Sound waves come into the external meatus, hit the eardrum making it vibrate and causing the ossicular chain to vibrate.

These vibrations end at the stapes, transferring to the oval window.

The other side of the oval window is the inner ear that is filled with fluid.

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7
Q

The round _______ has to do with ________ the pressure that the _______ makes in the fluid, overall transmission of ________.

A _______ is transmitted through fluid in the _______ ear, goes around and to the center of the _______, then ________ back out the round ________.

A

The round window has to do with dissipitating the pressure that the vibration makes in the fluid, overall transmission of pressure.

A vibration is transmitted through fluid in the inner ear, goes around and to the center of the cochlea, then is transmitted back out the round window (goes back around in reverse).

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8
Q

The inner ear is _______ _______ and includes both the _______ and the ________ canals.

The ________ canals or _______ branch are filled with fluid. When the fluid moves it results in stimulation of _______ and orientation in _______.

The amount of pressure is what allows brain to determine ________ of the _______.

A

The inner ear is fluid filled and includes both the cochlea and the semicircular canals.

The semicircular canals or vestibular branch are filled with fluid. When the fluid moves it results in stimulation of balance and orientation in space.

The amount of pressure is what allows brain to determine direction of the body.

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9
Q

The other part of the inner ear is known as the ________.

The cochlea is called the ______ capsule or _______. Movement of fluid here stimulates the ________ _______.

It is layered with ______ and has a _________ organization. The stimulation of low vibrations results in ______ pitches, stimulation of high vibrations result in ______ pitches.

Stimulation of cilia in the ________ branch results in ________. The transfer of _______ movement stimulates hair cells which result in the perception of _______ and timbre

A

The other part of the inner ear is known as the cochlea.

The cochlea is also called the otic capsule or labyrinth. Movement of fluid here stimulates the acousitc nerve.

It is layered with cilia and has a tonotopic organization. The stimulation of low vibrations results in lower pitches, stimulation of high vibrations result in higher pitches.

Stimulation of hair cells in the cochlear branch results in hearing. The transfer of fluid movement stimulates hair cells which result in the perception of pitch and quality of timbre

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10
Q

Name the 4 main parts of the pinna

A

tragus, helix, antihelix, and the external acoustic meatus.

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