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ANATOMY 102 > THE EAR > Flashcards

THE EAR Flashcards

1
Q

Fold surrounding the pinna

A

Helix

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2
Q

Curved ridge in front of the helix

A

Antihelix

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3
Q

Prominence over external auditory canal

A

Tragus

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4
Q

Ear projection opposite the tragus

A

Antitragus

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5
Q

Fleshy part at the base of the ear

A

Lobule

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6
Q

The external auditory canal is made up of?

A

Lateral part(Cartilage)
Medial part(Bone)

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7
Q

Has hair and secretes ear wax

A

Lateral part

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8
Q

A thin, cone shaped membrane that separates the outer ear from middle ear

A

Tympanic membrane

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9
Q

Function of tympanic membrane

A

Transmits sound to the ossicles in the middle ear

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10
Q

Concave part of the tympanic membrane

A

Outer surface

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11
Q

Convex part of tympanic membrane

A

Inner surface

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12
Q

Point where convexity is at maximum in the tympanic membrane

A

Umbo

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13
Q

2 parts of the tympanic membrane

A

Pars tensa and pars flaccida

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14
Q

Uppermost loose area of the tympanic membrane

A

Pars flaccida

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15
Q

Lower tightly stretched area

A

Pars tensa

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16
Q

3 bones of the middle ear

A

Malleus, incus and stapes

17
Q

Lateral wall of middle ear(Labyrinthine wall)

A

Tympanic membrane

18
Q

Medial wall of middle ear(Membranous wall)

A

Oval window, round window and promontary

19
Q

Roof of middle ear(Tegmental wall)

A

Tegmen tympani bone

20
Q

Separates the middle ear from middle cranial fossa

A

Tegmen tympani

21
Q

Transmits sound waves from the ossicles to the inner ear

A

Middle ear

22
Q

Lies in the petrous part of temporal bone

A

Inner ear

23
Q

Middle ear muscles

A

Stapedius and tensor tympani

24
Q

Muscle that helps open eustachian tube

A

Tensor tympani

25
Q

Muscle attaching to stapes and contracts in response to loud sounds, cheweing, speaking

A

The stapedius

26
Q

Fluid in membranous labyrinth

A

Endolymph

27
Q

Fluid separating the bony labyrinth from membranous labyrith

A

Perilymph

28
Q

Conical central axis which the cochlea makes its 2 3/4 turns

A

Modiolus

29
Q

Projects from the modiolus and divides the cochlea into scala vestibuli and scala tympani

A

Spiral ridge

30
Q

An opening at the apex where the two passages can communicate(Inner ear)

A

Helicotrema

31
Q

Central part of bony labyrinth

A

Vestibule

ANATOMY 102 (20 decks)

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