Larynx (week 3) Flashcards Preview

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Flashcards in Larynx (week 3) Deck (39):
0

3 functions of the Larynx

1.Maintain patency for airflow
2.Vocalization
3.Prevent entry of foreign objects when swallowing

1

Name the 6 laryngeal cartilages

Epiglottic, Thyroid, Cricoid, Arytenoid, Corniculate and Cuneiform

2

Where does the stalk of the epiglottis attach?

Into the Thyroid cartilage

3

What other bone does the Superior horn of the Thyroid cartilage articulate with?

Hyoid bone

4

Inferior horn of thyroid cartilage articulates with what other structure?

Cricoid cartilage

5

Thyrohyoid membrane connects what two structures?

Hyoid bone and Thyroid cartilage

6

The three ligaments that make up the Conus Elasticus

Median Cricothyroid ligament
Lateral Cricothyroid ligament
Vocal ligament

7

Hyoepiglottic ligament attaches what two structures

Hyoid bone and epligottis

8

Thyroepiglottic ligament attaches what two structures

Thyroid cartilage and epiglottis

9

Quadrangular membrane is made up of what two ligaments?

Vestibular ligament (bottom of quadrangular mem.) and Aryepiglottic ligament (top of quadrangular mem.)

10

The Vestibular ligament is where in relation to the Vocal ligament

Superior

11

Which folds are considered the False folds and True folds

False: Vestibular folds
True: Vocal folds

12

What three things make up Level II of the Interior Larynx

Vestibular folds, Vestibule and Vocal folds

13

What are the boundaries of Level III of the Interior Larynx

Vocal folds to Tracheal rings

14

Most Intrinsic muscles of the Larynx are innervated by what nerve?

Recurrent Laryngeal nerve

15

What muscle is innervated by the External Laryngeal nerve

Cricothyroid

16

Attachments of Cricothyroid

Cricoid cartilage to inferior border of Thyroid cartilage

17

Action of Cricothyroid

Stretches and Tenses vocal cords
Increases pitch

18

Attachments of Posterior Cricoarytenoid

Posterior cricoid cartilage to the muscular processes of the arytenoid cartilage

19

Action of Posterior Cricoarytenoid

Abducts or opens vocal cord

20

Lateral Cricorytenoid attachments

Lateral arch of cricoid to muscular process of arytenoid cartilage

21

Action of Lateral Cricoarytenoid

Adducts or closes vocal cords

22

Cricothyroid is innervated by what nerve?

External Laryngeal nerve

23

Attachment of Thyroarytenoid

Internal aspect of thyroid lamina to muscular process of arytenoid cartilage

24

Action of Thyroarytenoid

Relaxes vocal cords (lowers voice)

25

Attachments of Transverse Arytenoids

Attach one arytenoid to the other

26

Action of Transverse Arytenoids

Adducts arytenoids and vocal cords to close the glottis

27

Attachment of Oblique arytenoids (aryepiglottic)

From one arytenoid cartilage to the epiglottis on the opposite side

28

Action of Oblique Arytenoids

Approximates epiglottis and arytenoids to close glottis

29

Attachment of Vocalis

Arytenoids to vocal ligament

30

Action of Vocalis

Shortens vocal cords and provides selective tensing and relaxing

31

What branch of the External Carotid supplies blood to the larynx

Superior thyroid

32

What branch of the Superior Thyroid artery supplies blood to the larynx

Superior Laryngeal

33

What branch of the Subclavian artery has branches that supplies blood to larynx

Thyrocervical trunk

34

Describe the pathway of branches from the subclavian artery to the larynx

Subclavian Artery --> Thyrocervical Trunk --> Inferior Thyroid --> Inferior Laryngeal

35

Describe brief pathway of motor innervation to the Cricothyroid muscle

Superior laryngeal nerve --> External laryngeal nerve

36

What cranial nerve innervates general sensory to the larynx muscles

Vagus (CN X)

37

Pathway of general sensory innervation above vocal cords

Superior Laryngeal nerve --> Internal Laryngeal nerve

38

Parasympathetic innervation of larynx is provided by what CN

Vagus (CN X)