11.1 The larynx Flashcards Preview

Semester 4- Head and Neck > 11.1 The larynx > Flashcards

Flashcards in 11.1 The larynx Deck (34):
1

What are the functions of the larynx?

Maintain respiration
Produce phonation
Protect trachea
Produce cough reflex

2

Where is the supraglottis?

Inferior surface of epiglottis to the false vocal cords

3

Where is the glottis?

Vocal cords and 1cm inferiorly

4

Where is the subglottis?

1cm inferior of vocal cords to lower border of cricoid cartilage

5

What is the piriform fossa?

Natural funnel formed by the epiglottis

6

What is the epiglottis?

Leaf-shaped plate of elastic fibrocartilage which is attached to the posterior thyroid cartilage

7

What is the vallecula?

Depression between tongue base and epiglottis

8

Describe the thyroid cartilage

Anterior laryngeal prominence (Adam's Apple)
Comprised of the superior and inferior thyroid horns

9

What shape is the cricoid cartilage?

Signet ring

10

What is the cricoid cartilage?

Most inferior cartilage in larynx
Completely encircles airway with 2 articulating facets on each side for the thyroid and arytenoid cartilage

11

What shape is the arytenoid cartilage?

Pyramid shape

12

What is the arytenoid cartilage involved in?

Vocal cord movement

13

At what vertebral level is the superior border of the thyroid cartilage?

C4

14

At what vertebral level is the cricoid cartilage found?

C6

15

What are the vocal cords?

Muscles and ligaments which vibrate to resonate and make sound

16

What eithelium covers the vocal cords?

Stratified squamous epithelia

17

How are the vocal cords placed when breathing?

Open

18

How are the vocal cords placed when eating?

Closed

19

How are the vocal cords placed when speaking?

Partially open

20

What is the function of the cricothyroid muscle?

Stretches and tenses vocal cords

21

What is the function of the posterior cricoarytenoid muscle?

Abducts vocal fold

22

What is the function of the lateral cricoarytenoid muscle?

Adducts vocal fold

23

What is the function of the thyroarytenoid muscle?

Relaxes vocal fold

24

What is the function of the transverse and oblique arytenoid muscles?

Close intercartilaginous portion of rima glottidis

25

What is the function of the vocalis muscle?

Relaxes posterior vocal ligament

26

What nerve supplies the cricothyroid muscle?

External laryngeal nerve

27

What 2 arteries supply the larynx?

Superior laryngeal artery
Inferior laryngeal artery

28

What 2 veins drain the larynx?

Superior laryngeal vein
Inferior laryngeal vein

29

What symptoms will be experienced with unilateral recurrent laryngeal nerve palsy?

Hoarse voice
Short of breath

30

What symptoms will be experienced with bilateral recurrent laryngeal nerve palsy?

Aphonia
Very short of breath
CVS problems
Respiratory systems

31

What is the most common type of cancer found in the larynx?

Squamous cell carcinoma

32

What is epiglottitis?

Inflammation of the epiglottis

33

What is trachea-bronchitis?

Inflammation of the trachea and bronchi

34

What is laryngomalacia?

Soft immature upper larynx cartilage in infants collapses inward and causes airway obstruction