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Exam 2 > Ear anatomy (3) > Flashcards

Ear anatomy (3) Flashcards

1
Q

What is the auricle?

A

Shell shaped projection surrounding the opening of the external acoustic meatus

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2
Q

What is the helix?

A

Posterior to the auricle, but its thicker

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3
Q

What is the lobule?

A

Earlobe, lack cartilage

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4
Q

What is the external auditory meatus?

A

Short, curved tube that goes from auricle to eardrum

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5
Q

What 2 parts are in the external auditory meatus?

A

Cercuminous glands and tympanic membrane

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6
Q

What is the cercuminous glands?

A

Produce earwax

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7
Q

What is the tympanic membrane?

A

Eardrum, hit by sound waves, divides the outer and middle ear

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8
Q

Where is the oval window?

A

Deep to stapes

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9
Q

What are the 3 ossicles?

A

Malleus, incus and stapes

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10
Q

Malleus looks like what?

A

A hammer

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11
Q

What does the incus look like?

A

An anvil

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11
Q

Where is the incus?

A

Next to the malleus

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12
Q

What 2 muscles are associated with the ossicles?

A

The tensor tympani and the stapedius

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13
Q

Where is the tensor tympani muscle?

A

Arises from the pharyngotympanic tube and attaches to the malleus

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14
Q

Where is the stapedius muscle?

A

Runs from the posterior wall of the middle ear to the stapes

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15
Q

Where is the antrum?

A

Superior to the malleus and incus

16
Q

What is the antrum part of?

A

Entrance to mastoid process (?)

17
Q

Where is the round window?

A

Inferior to the stapes

18
Q

What is the pharyngotympanic tube?

A

Runs down to link the middle ear cavity with the nasopharynx

19
Q

Normally the pharyngotympanic tube is ______ but swallowing or yawning ______ it briefly to equalize ________ in the _______ cavity with external air pressure

A

flattened, opens, middle

20
Q

What is a labyrinth?

A

A maze because it’s a complicated shape

Exam 2 (11 decks)

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