Comd 3400 Exam 2 Cm 8

Front 1

what are the ossicles?

Back 1

chain of 3 small bonds that bridge the gap in the middle ear space, from the timpanic membrane to the oval window.

Front 2

3 parts of the ossicles are?

Back 2

hammel, anal, stirup
(mallus, incus, stapes- called for class)

Front 3

which is the largest ossicle?

Back 3

malleus

Front 4

what does a malleus have?

Back 4

head, neck,

Front 5

what are the 3 processes of the malleus?

Back 5

lateral, anterior, manubrium

Front 6

what does the head occupy?

Back 6

1/2 of the epitympanic recess (attic of the middle ear)

Front 7

what is the manubrium attached to?

Back 7

middle connective tissue, timpanic membrane

Front 8

what is the middle connective tissue of the timpanic membrane?

Back 8

fibrous membrane

Front 9

what does the posterior surface of the head contain?

Back 9

an articular facet for the attachment to the incus

Front 10

where the ____ joins the ___,there is a small boney projection for attachment of the ____ _____ ____.

Back 10

manubrium, neck, tensor tympani tendon

Front 11

the incus has 3 things?

Back 11

body
long process,
short process

Front 12

body occupies ____ of the eptitympanic recess

Back 12

1/2

Front 13

what occupies the other 1/2 of the epitympanic recess?

Back 13

head of malleus

Front 14

at nearly right angles ____ processes arise from the body

Back 14

2

Front 15

the _____ process is how long?

Back 15

5 mm

Front 16

the short process runs____backward(posteriorly)

Back 16

horizontally

Front 17

what does the short process occupy?

Back 17

fossa incudis

Front 18

what is the fossa incudis?

Back 18

depression along the back wall of middle ear

Front 19

how long is the long process?

Back 19

7mm

Front 20

where does the long process run?

Back 20

vertically, parallel to the manubrium,

Front 21

the inferior end sharply medially, and terminates at the _____ ____

Back 21

lenticular process

Front 22

what is a concave articular facet for reception of the lenticular process?

Back 22

head of the stapes

Front 23

what is the small boney spine on the head-neck for attachment of the stapedial tendon?

Back 23

head of the stapes

Front 24

what does the neck of the stapes contain?

Back 24

2 crura (kroo'rah)
posterior crus
anterior crus

Front 25

what does the neck of the stapes originate at?

Back 25

near inferior margin of footplate,

Front 26

the inferior end sharply medially, and terminates at the _____ ____

Back 26

lenticular process

Front 27

what is a concave articular facet for reception of the lenticular process?

Back 27

head of the stapes

Front 28

what is the small boney spine on the head-neck for attachment of the stapedial tendon?

Back 28

head of the stapes

Front 29

what does the neck of the stapes contain?

Back 29

2 crura (kroo'rah)
posterior crus
anterior crus

Front 30

what does the neck of the stapes originate at?

Back 30

near inferior margin of footplate,

Front 31

what does the neck of the stapes and items connect to?

Back 31

finfeior margin of footplate- about 3/4 of the way down

Front 32

compared to posterior crus, what is the anterior crus?

Back 32

anter, crus more slendor, shorter, and less curved than posterior crus

Front 33

what is the footplate of stapes contain?

Back 33

part osseous, and part cartilaginous, (bone covered with cartilage?

Front 34

what does the footplate of stapes occupy?

Back 34

oval window

Front 35

what is the footplate of stapes held in place by?

Back 35

annular ring

Front 36

what is the obturator foramen?

Back 36

one that closes opening of the stapes

Front 37

the opening of the stapes is where?

Back 37

where the cowboy boot goes

Front 38

an open air filled place in the stapes of is the?

Back 38

obturator foramen

Front 39

the canal which establishes communication between the middle ear and nasopharynx?

Back 39

auditory tube

Front 40

wht is the auditory tube also called?

Back 40

eustachian tube

Front 41

what is the eustachian tube named after?

Back 41

eustachiu, 16 th century anatomist

Front 42

the eustachian tube is how long in adults?

Back 42

35-38 mm in length

Front 43

the eustachian tube is directed downward, ___ and _____

Back 43

forward, medially

Front 44

4 sections of auditory tube?

Back 44

1. osseous
2. cartilaginous
3. membranous
4. isthmus

Front 45

wht is the function of the auditory tube?

Back 45

equalize middle ear pressure with outside air pressure

Front 46

what is the function of the auditory tube (part 2)

Back 46

provide drainage of normal and diseased secretions from the middle ear

Front 47

how long is the osseous portion of auditory tube?

Back 47

12-14mm length

Front 48

what is the total lenght of auditory tube?

Back 48

32-35 mm

Front 49

the ___ __ begins at the ___ ___ just beneath the septum canalis musculotubarii.

Back 49

osseous portion, cartoid wall

Front 50

the ____ ___ ______ is a thin sheet of bone, seperates the ____ ___ of the ___ ____ from the canal tht contains the ___ _____ ____

Back 50

septum canalis musculotubarii,osseous portion, auditory tube, tensor tympanic muscle

Front 51

the lumen is the opening of what?

Back 51

opening of osseous portion auditory tube

Front 52

how long is the lumen?

Back 52

3-6 mm in diamenter

Front 53

at the middle ear end the lumen is what?

Back 53

normal

Front 54

how much above the floor of the middle ear is the lumen?

Back 54

3 mm

Front 55

why is it a problem if the lumen is 3 mm above floor of middle ear?

Back 55

does not allow for complete drainage

Front 56

from left if you start at boney section of auditory tube, as you go through tube it becomes more what?

Back 56

cartlaginous

Front 57

when you reach the termination of the tube at the nasal pharynxd, we see the ___ ___ and the __ ____ ___

Back 57

lateral cartilage portion, medial cartilage portion

Front 58

what does the little slit between the 2 lateral cartilage and medial cartilage portion of termination of tube at nasal pharynx contain?

Back 58

soft tissue, little opening here normally closed

Front 59

at the ___ ____ end of the tube this is where the termination of the tube is at the nasal pharynx.

Back 59

naso pharyngeal

Front 60

the ___ ____ end of the tube opens from time to time.

Back 60

naso pharyngeal

Front 61

the ___ ____ is opened by a combo of contractions of which 2 muscles?

Back 61

auditory tube, tensor palatini, levator palatini muscles

Front 62

the lateral cartilage of audiotry tube is pulled
____ from the medial cartilage?

Back 62

away

Front 63

the auditory tube opens approx. 1000 times per day? true, false

Back 63

true

Front 64

when does the auditory tube open?

Back 64

mainly reflexive conditions

Front 65

what is the an ostium?

Back 65

ostium is an entrance into a hollow organ or cavity

Front 66

what happens at the pharyngeal ostium?

Back 66

this is where the tube enters the back of throat/nasal pharynx area

Front 67

what would you see if you were looking through this pharyngeal ostium?

Back 67

be peering across the palate into the posterior nasal pharnyx

Front 68

look into this pharyngeal ostium what would you see?

Back 68

a prominence on the back off the throat,

Front 69

at the prominance on the back of the throat, wht does the cartilage an coverinings form?

Back 69

prominent elevation

Front 70

what is the torus tubaris?

Back 70

prominence at the back of the throat