Larynx Flashcards

1
Q

how many cartilages are located within the larynx?

A

9 - 3 unpaired, 6 paired

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the 3 unpired cartilages in the larynx?

A

epiglottis
thyroid
cricoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

the two lamina of thyroid cartilage join anteriorly to form what?

A

laryngeal prominence (adam’s apple)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the complete ring of hyaline cartilage that marks the inferior border of the larynx?

A

cricoid cartilage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

where does the larynx end?

A

C6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

the cricoid cartilage articulates with which paired cartilage?

A

arytenoid cartilages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

cricoid pressure

A

applying pressure to the cricoid to occlude to oesophagus to prevent the regurgitation of gastic contents during emergy intubation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what marks the entrance to the larynx

?

A

epiglottis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what happens to the epiglottis during swallowing?

A

flattens and moves posteriorly to close larynx and prevent aspiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are the 3 paired cartilage of the larynx?

A

arytenoid
corniculate
cuneiform

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

where are the arytenoid cartilages found?

A

on the cricoid cartilage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

anatomically the larynx can be divided into what 3 sections?

A

supraglottis
glottis
subglottis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the arterial supply to the larynx?

A

superior laryngeal artery
inferior laryngeal artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the motor and sensory innervation of the larynx?

A

recurrent laryngeal nerve - infraglottis and all internal muscles (except cricothyroid)
superior laryngeal nerve - supraglottis and cricothyroid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the action of the cricothyroid muscle?

A

stretches and tenses vocal ligament - important in creation of forceful speech

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the action of hte thyroarytenoid muscle?

A

relaxes the vocal ligament - allows for softer voice

17
Q

what is the action of the posterior cricoarytenoid muscle?

A

sole abductors of vocal folds - widens the rima glottidis

18
Q

what is the action of the lateral cricoarytenoid?

A

adducts the vocal folds - narrows the rima glottidis, modulaiting tone and volume of speech

19
Q

what are the actions of the transverse and oblique arytenoids?

A

adduct the arytenoid cartilages - closes posterior portion of rima glottidis

20
Q

Label the cartilage in the larynx

A
21
Q

Label the external ligaments of the larynx

A
22
Q

Label the infrahyoid muscles

A
23
Q

Label the laryngeal membranes

A
24
Q

Label the larynx

A
25
Q

Label this posterior view of the larynx

A
26
Q

Label this posterior view of the intrinsic muscles of the larynx

A
27
Q

Label the intrinsic muscles of the larynx

A
28
Q

Label the suprahyoid muscles

A
29
Q

Label the branches of the vagus nerve

A