larynx Flashcards

(52 cards)

1
Q

general larynx

A
respiratory and voice producing function
connects pharynx to trachea
prevents food getting into airways
CV3-6
cartilages, membranes, and mm
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2
Q

laryngeal aditus

A

sup opening from pharynx

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3
Q

vestible

A

area proximal to vestibular folds

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4
Q

vestibular folds

A

false

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5
Q

rima vestibuli

A

opening btwn vestibular folds

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6
Q

ventricle

A

btwn vestibular and vocal folds

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7
Q

rima glottidis

A

opening btwn vocal folds
shape varies depending on position of vocal folds
variation in tension and length of folds and width of rima produces changes in pitch

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8
Q

glottis

A

rima glottidis plus vocal folds

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9
Q

infraglottic cavity

A

distal to vocal folds

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10
Q

cricoid caritlage

A

CV6
site where carotid a can be compressed against CV6
jnx of larynx and traches
jnx of pharynx and esophagus

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11
Q

tracheotomy

A

incision btwn criocid cartilage and first tracheal cartilages
or bwn cricoid and thyroid caritlages thru criciothyroid lig

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12
Q

thyroid cartilage

A
1
CV4,5
laminae(2) fuse ant and open post
sup horn attached to hyoid via lat thyrohyoid lig
inf horn articlates w/cricoid cart
laryngeal prominence (adams apple)
sup thyroid notch
oblique line
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13
Q

cricoid cartilage

A

1
CV6
immobile ring attached via membrane to 1st tracheal cartilage
ant arch
post lamina
articulates w/arytenoid and thyroid cartilages

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14
Q

arytenoid cartilages

A

2
lie perched atop post portion of cricoid cartilage
apex- attaches to aryepiglottic fold
vocal process- attaches to vocal lig
mm process- attaches to post and lat cricoarytenoid mm

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15
Q

epiglottic cartilage

A

1
leaf shaped elastic post to root of tongue
broad sup end free, inf attached to thyroid cart
mm of pharynx pull the thyroid cart against epiglottis during swallowing to prevent food from moving into larynx

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16
Q

ligaments attaches to epiglottis

A

thryoepiglottic
hyoepiglottic
aryepiglottic
glossoepiglottic

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17
Q

corniculate cartilage

A

2

lie atop apex of arytenoid cat

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18
Q

cuneiform

A

2

lie w/in aryepiglottic folds

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19
Q

laryngeal extrinsic ligaments

A

thyroid membrane
cricotracheal lig
hypepiglottic lig
glossoepiglottic lig

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20
Q

thyroid membrane

A

attaches hyoid bone to sup border of thyroid cartilage
thickened laterally - lat thyrohyoid lig
thickened medially- median thyrohyoid lig
pierced by internal laryngeal n and sup laryngeal a

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21
Q

cricotracheal lig

A

attaches cricoid to first tracheal cartilage

22
Q

intrinsic lig of larynx

A

quadrangular lig

cricovocal lig

23
Q

quadrangular lig

A

attaches ant to thyroid and epiglottic cartilages
attaches post to arytenoid cart
forms vestibular ligaments (covered in mucosa=vestibular folds)
forms aryepiglottic lig (covered in mucosa= aryepiglottic fold)

24
Q

cricovocal lig

A

attaches inf to cricoid cartilage
attaches sup to thryoid and arytenoid cartilages
thickened regions:
-median cricothyroid lig
-lat cricothyroid lig
-vocal lig extends from internal surface of thyroid lamina to vocal process of arytenoid, covered w/mucosa= vocal fold

25
vocal folds
formed from mucosa overlying vocal lig and vocalis m
26
vocal lig
innermost portion of circovocal lig, extends from thryoid cart to vocal process of arytenoid cart
27
vocalis m
innermost portion of thyroarytenoid m
28
vestibular folds
formed from mucosa overlying vestibular lig | covered w/highly vascularized mucosa, contains many mucus secreting gland
29
joints of larynx
cricothyroid | cricoarytenoid
30
cricothyroid joint
btwn cricoid cart and inf horn of thyroid cart synovial, gliding allows thyroid to glide on cricoid in order to change vocal cord length
31
cricoarytenoid joint
btwn cricoid cart and arytenoid cart synovial, gliding, rotational allows arytenoid cart to rotate and glide toward each other
32
rotation of arytenoid carts
to abduct (post cricoarytenoid) and adduct (lateral cricoarytenoid) vocal ligs
33
gliding of arytenoids
to adduct vocal ligs to clode ria glottis (transverse and oblique artenoids)
34
rotating thyroid cart on cricothryoid joint
to increase (Cricothyroid m) and decrease (thyroarutenoid m) tension on vocal ligs
35
circothyroid m
tilts thyroid forward to elongate and tighten vocal lig
36
transverse and oblique arytenoids
adduct arytenoid carts | close laryngeal inlet by approximating arytenoid carts
37
post cricoarytenoid
abduct vocal folds to open rima glottis
38
lateral cricoarytenoid
adduct vocal fold to close rima glottis
39
thyroarytenois
rotates thyroid cart back to shorten and loosen vocal lig
40
vocalis m
innermost portion of thyroarytenoid m lateral to vocal lig locally controls vocal lig produces minute adjustments
41
innervation
external br of superior laryngeal n to cricothyroid | recurrent laryngeal all other mm
42
internal laryngeal n
from superior from X pierces thyrohyoid membrane provides GVE-P and GVS to proximal true vocal folds SVA to epiglottic region of tongue
43
external laryngeal n
from superior from X | SVE to cricothyroid m
44
cough refelx
mediated by X | objects in larynx stimulate superior laryngeal n and causes contraction of laryngeal m
45
superior laryngeal n block
needle inserted bwn hyoid and sup thyroid cart
46
inf laryngeal n
from recurrent laryngeal from X enters larynx by passing inf to inf constrictor GVEP and GVA distal to true vocal folds SVE to all mm except cricothyroid
47
aa of larynx
sup laryngeal a cricothyroid a inf laryngeal a
48
sup laryngeal a
br of sup thyroid a pierces thyrohyoid membrane supplies larynx above true folds
49
circothyroid a
br of sup thryroid a | supplies cricothyroid m
50
inf laryngeal a
br of inf thyroid a | supplies larynx below true folds
51
vv of larynx
sup laryngeal v to internal jugular | inf laryngeal v to left brachiocephalic
52
lymp
above true folds -> sup deep cervical nodes | below true folds -> inf deep cervical nodes