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DDS1-gross anatomy > larynx > Flashcards

larynx Flashcards

(72 cards)

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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
cricothyroid ligament
from cricoid cartilage to free upper margin (front: thyroid cartilage, back: vocal process of arytenoid cartilage)
26
median cricothyroid ligament
from anterior cricoid cartilage to anterior thyroid cartilage * fused with cricothyroid ligament
27
quadrangular membrane
from lateral margin of epiglottis to anteriolateral surface of arytenoid cartilage
28
vestibular ligament in relation to vocal ligament
vestibular is more superior and lateral
29
lower free margin of quadrangular membrane is
vestibular ligament
30
two laryngeal joints
1. cricothyroid joints | 2. crico-arytenoid joints
31
cricothyroid joint action
- move thyroid cartilage FORWARD AND DOWNWARD | - lengthens vocal ligament (talking)
32
crico-arytenoid joint action
- arytenoid cartilages SLIDE TOGETHER AND ROTATE - movement of vocal ligaments - open and close inlet
33
passage from pharynx to larynx
laryngeal inlet
34
what folds are above the quadrangular membrane
aryepiglottic fold
35
interarytenoid notch
depression between 2 corniculate tubercles
36
portion above the vestibular folds
laryngeal vestibule
37
portion between vestibular and vocal folds
ventricle
38
inferior space to vocal folds
infraglottic space
39
two vocal folds seen from above are called
glottis
40
rima glottidis
opening between vocal folds
41
rima vestibuli
opening between vestibular folds
42
action of cricothyroid m
pulls thyroid cartilage FORWARD and rotates it DOWN | -STRETCHES vocal ligament
43
action of cricothyroid m occurs where
cricothyroid joint
44
innervation of cricothyroid m
external laryngeal n (vagus n)
45
all mm of the larynx are innervated by what cranial nerve
vagus n
46
all mm of larynx are supplied by ___ n except for __ which is supplied by ___ n
all mm of larynx are supplied by RECURRENT LARYNGEAL N except for CRICOTHYROID M which is supplied by EXTERNAL LARYNGEAL N
47
action of posterior crico-arytenoid m
- abduction of arytenoid cartilages - abduction (OPENING) of vocal folds - opening of rima glottidis
48
action of lateral crico-arytenoid m
adduction/closing of vocal folds
49
transverse arytenoid m action
- adduction of arytenoid cartilage | - closing rima glottidis
50
oblique arytenoid m
- narrows laryngeal inlet - adduct arytenoid cartilage - closes rima glottidis
51
if you cut the vagus n, what is affected
phonation and swallowing
52
vocalis mm
- origin: arytenoid cartilage - inserts: along vocal ligament - action: adjust tension of vocal folds
53
thyroarytenoid mm
- relaxes vocal ligament | - narrows laryngeal inlet
54
what artery travels with the recurrent laryngeal n
inferior laryngeal a
55
venous drainage superiorly occurs by
superior laryngeal vein => superior thyroid vein => IJV
56
venous drainage inferiorly occurs by
inferior laryngeal vein => inferior thyroid vein => subclavian vein
57
what supplies laryngeal cavity from top up to vocal folds
internal laryngeal n
58
what supplies laryngeal cavity below vocal folds
recurrent laryngeal n
59
cricothyroid m origin
arch of cricothyroid
60
cricothyroid m insertion
oblique part: inferior horn of thyroid cartilage | straight part: inferior border of thyroid cartilage
61
posterior crico-arytenoid m origin
posterior surface of cricoid
62
posterior crico-arytenoid m insertion
muscular process of arytenoid cartilage
63
lateral crico-arytenoid m origin
arch of the cricothyroid
64
lateral crico-arytenoid m insertion
muscular process of arytenoid
65
transverse arytenoid m origin
posterior surface of arytenoid
66
transverse arytenoid m insertion
posterior surface of opposite arytenoid
67
oblique arytenoid m origin
muscular process of one arytenoid cartilage
68
oblique arytenoid m insertion
- apex of opposite arytenoid cartilage - aryepiglottic m fibers - aryepiglottic fold
69
vocalis m origin
- vocal process | - anterolateral surface of arytenoid cartilage
70
vocalis m insertion
ipsilateral vocal ligament
71
thyro-arytenoid m origin
- lower half of thyroid angle | - adjacent external surface of cricothyroid ligament
72
thyro-arytenoid m insertion
-anterolateral surface of arytenoid cartilage

DDS1-gross anatomy (39 decks)

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