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DDS1-gross anatomy > larynx > Flashcards

larynx Flashcards

1
Q

what makes up the larynx

A
  • 3 large unpaired cartilages (epiglottis, thyroid, cricoid)

- 3 pairs of smaller cartilages (arytenoid, corniculate, and cuneiform)

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2
Q

how many cartilages form the larynx in total

A

9

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3
Q

the epiglottis is attached to the thyroid cartilage by what

A

thyro-epiglottic ligament

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4
Q

each lamina has posteriorly a

A

superior and inferior horn

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5
Q

superior horn of lamina is connected to hyoid bone by

A

lateral thyrohyoid ligament

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6
Q

the inferior horn of the thyroid lamina articulates with

A

cricoid cartilage

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7
Q

what runs inferiorly and anteriorly along the thyroid lamina

A

oblique line

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8
Q

what is found on the oblique line

A

superior and inferior tubercle

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9
Q

vertical ridge on the posterior surface of cricoid cartilage is the attachment for

A

esophagus

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10
Q

the sides of the cricoid cartilage have facets for articulation with

A

inferior horn of thyroid cartilage

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11
Q

the superior surface of the cricoid cartilage has two facets for articulation with

A

arytenoid cartilage

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12
Q

anterior angle of the base of arytenoid cartilage

A

vocal process, attachment for vocal ligament

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13
Q

lateral side of arytenoid cartilage is

A

muscular process, attachment for intrinsic mm

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14
Q

two depressions on arytenoid cartilage

A

upper: vestibular ligament
lower: vocalis mm

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15
Q

what lies on top of arytenoid cartilage

A

corniculate cartilage

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16
Q

cuneiform cartilage

A

anterior to corniculate cartilages

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17
Q

extrinsic ligaments

A
  1. thyrohyoid membrane
  2. hyo-epiglottic ligament
  3. cricotracheal ligament
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18
Q

posterior border of thyrohyoid membrane forms the

A

lateral thyrohyoid ligaments

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19
Q

cartilage present in the lateral thyrohyoid ligament is called

A

triticeal cartilage

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20
Q

anterior border of thyrohyoid membrane forms

A

median thyrohyoid ligament

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21
Q

hyo-epiglottic ligament

A

from midline of epiglottis to hyoid bone

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22
Q

cricotracheal ligament

A

from lower border of cricoid cartilage to 1st tracheal cartilage

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23
Q

what marks the transition from larynx to trachea

A

cricotracheal ligament

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24
Q

intrinsic ligaments

A
  1. cricothyroid ligament
  2. median cricothyroid ligament
  3. quadrangular membrane
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25
Q

cricothyroid ligament

A

from cricoid cartilage to free upper margin (front: thyroid cartilage, back: vocal process of arytenoid cartilage)

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26
Q

median cricothyroid ligament

A

from anterior cricoid cartilage to anterior thyroid cartilage
* fused with cricothyroid ligament

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27
Q

quadrangular membrane

A

from lateral margin of epiglottis to anteriolateral surface of arytenoid cartilage

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28
Q

vestibular ligament in relation to vocal ligament

A

vestibular is more superior and lateral

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29
Q

lower free margin of quadrangular membrane is

A

vestibular ligament

30
Q

two laryngeal joints

A
  1. cricothyroid joints

2. crico-arytenoid joints

31
Q

cricothyroid joint action

A
  • move thyroid cartilage FORWARD AND DOWNWARD

- lengthens vocal ligament (talking)

32
Q

crico-arytenoid joint action

A
  • arytenoid cartilages SLIDE TOGETHER AND ROTATE
  • movement of vocal ligaments
  • open and close inlet
33
Q

passage from pharynx to larynx

A

laryngeal inlet

34
Q

what folds are above the quadrangular membrane

A

aryepiglottic fold

35
Q

interarytenoid notch

A

depression between 2 corniculate tubercles

36
Q

portion above the vestibular folds

A

laryngeal vestibule

37
Q

portion between vestibular and vocal folds

A

ventricle

38
Q

inferior space to vocal folds

A

infraglottic space

39
Q

two vocal folds seen from above are called

A

glottis

40
Q

rima glottidis

A

opening between vocal folds

41
Q

rima vestibuli

A

opening between vestibular folds

42
Q

action of cricothyroid m

A

pulls thyroid cartilage FORWARD and rotates it DOWN

-STRETCHES vocal ligament

43
Q

action of cricothyroid m occurs where

A

cricothyroid joint

44
Q

innervation of cricothyroid m

A

external laryngeal n (vagus n)

45
Q

all mm of the larynx are innervated by what cranial nerve

A

vagus n

46
Q

all mm of larynx are supplied by ___ n except for __ which is supplied by ___ n

A

all mm of larynx are supplied by RECURRENT LARYNGEAL N except for CRICOTHYROID M which is supplied by EXTERNAL LARYNGEAL N

47
Q

action of posterior crico-arytenoid m

A
  • abduction of arytenoid cartilages
  • abduction (OPENING) of vocal folds
  • opening of rima glottidis
48
Q

action of lateral crico-arytenoid m

A

adduction/closing of vocal folds

49
Q

transverse arytenoid m action

A
  • adduction of arytenoid cartilage

- closing rima glottidis

50
Q

oblique arytenoid m

A
  • narrows laryngeal inlet
  • adduct arytenoid cartilage
  • closes rima glottidis
51
Q

if you cut the vagus n, what is affected

A

phonation and swallowing

52
Q

vocalis mm

A
  • origin: arytenoid cartilage
  • inserts: along vocal ligament
  • action: adjust tension of vocal folds
53
Q

thyroarytenoid mm

A
  • relaxes vocal ligament

- narrows laryngeal inlet

54
Q

what artery travels with the recurrent laryngeal n

A

inferior laryngeal a

55
Q

venous drainage superiorly occurs by

A

superior laryngeal vein => superior thyroid vein => IJV

56
Q

venous drainage inferiorly occurs by

A

inferior laryngeal vein => inferior thyroid vein => subclavian vein

57
Q

what supplies laryngeal cavity from top up to vocal folds

A

internal laryngeal n

58
Q

what supplies laryngeal cavity below vocal folds

A

recurrent laryngeal n

59
Q

cricothyroid m origin

A

arch of cricothyroid

60
Q

cricothyroid m insertion

A

oblique part: inferior horn of thyroid cartilage

straight part: inferior border of thyroid cartilage

61
Q

posterior crico-arytenoid m origin

A

posterior surface of cricoid

62
Q

posterior crico-arytenoid m insertion

A

muscular process of arytenoid cartilage

63
Q

lateral crico-arytenoid m origin

A

arch of the cricothyroid

64
Q

lateral crico-arytenoid m insertion

A

muscular process of arytenoid

65
Q

transverse arytenoid m origin

A

posterior surface of arytenoid

66
Q

transverse arytenoid m insertion

A

posterior surface of opposite arytenoid

67
Q

oblique arytenoid m origin

A

muscular process of one arytenoid cartilage

68
Q

oblique arytenoid m insertion

A
  • apex of opposite arytenoid cartilage
  • aryepiglottic m fibers
  • aryepiglottic fold
69
Q

vocalis m origin

A
  • vocal process

- anterolateral surface of arytenoid cartilage

70
Q

vocalis m insertion

A

ipsilateral vocal ligament

71
Q

thyro-arytenoid m origin

A
  • lower half of thyroid angle

- adjacent external surface of cricothyroid ligament

72
Q

thyro-arytenoid m insertion

A

-anterolateral surface of arytenoid cartilage

DDS1-gross anatomy (39 decks)

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