Larynx and Pharynx Flashcards Preview

Clinical Human Anatomy: Head and Neck > Larynx and Pharynx > Flashcards

Flashcards in Larynx and Pharynx Deck (49):
1

On the thyroid...Plates/Laminae = adams apple are wider angles in men or women

wider angle in females, less angle in males

2

Attaches to superior cornu

thyrohyoid membrane attaches here

3

Attaches to inferior cornu

-articulates w/ cricoid cartilage

4

a. Broad posterior lamina; gets large
b. Anterior arch; narrow
c. Forms complete ring; ONLY one that makes ring around

Cricoid cartiledge1

5

Sit on top of posterior lamina. 2 of them sit there, connect to cricoid via synovial joints

Arytenoids

6

Actions of arytenoids

ability to move/twist/glide→ All affects voice!
-d/t flat articular surface
-move medially and come closer together
-go anteriorly and slide forward
-can twist/rotate

7

Vocal Process: projects anteriorly/posteriorly or laterally?

Vocal Process: projects anteriorly
-vocal ligament attaches then to inside surface of thyroid cartiledge

8

Muscular processes connect:

Posterior and lateraly: musclular process
- contracts allow it to swivel

9

Where does the Corniculate lay

a. ontop of aryetnoids

10

Epiglottic Cartildge connects where?
What type is it?

a. Connects to inside surface of thyroid
b. Elastic cartiledge—more flexible

11

Tent-like fibrous sheets projecting medially; think the support where tent has surface is akin to vocal ligs

Lateral cricothyroid Ligaments

12

Lateral cricothyroid Ligaments

medially connects to vocal ligament

13

Thickended, superior, free edge of crocovocal membranes

Vocal ligaments

14

Cricovocal membranes + vocal ligaments

Conus elasticus

15

Quadrangular lies:

from epiglottis→ cartiledges;

16

mucosa over vestibular ligaments

Vestibular folds

17

mucosa covering vocal ligaments, cricovocal membranes + vocalis muscles

Vocal folds

18

AIRWAY: Space between vocal folds in horizontal plane

Rima Glottis

19

Space superior to vocal folds

Vestibule of Larynx

20

btwn vestibular and vocal folds = space

Ventricle of Larnx

21

Space inferior to vocal chords

Infraglottic cavity

22

connects tongue and epiglottis

Glossoepiglottic fold

23

Aditus laryngius

laryngeal inlet~ opening of larynx

24

extend from artenoid cartilages to epiglottis, make up lateral wall of aditus laryngis

aryepiglottic folds

25

Pear shaped space lateral to aryepglottic fold

Piriform recess

26

tilts thyroid cart anteriorly, elongating and tightening
a. vocal ligements: pulled on to ↑ pitch of voice

Cricothyroids

27

Cricothyroids innervated by:

External Larnyngeal (ONLY ONE!!)

28

pulls arytenoid cartilededs together---thus affect width of rima glottidis or airway

Transverse Arythenoids

29

Innervation of Transverse Arythenoids

Recurrent laryngeal

30

Muscle that goes from one arytenoid cartiledge to other

Transverse Arytenoids

31

like drawstring—shorten and contract to squeeze or push down on sides of atidus laryngus and pull on epiglottic fold

Oblique arytenoids

32

Innervation of oblique arytenoids

recurrent layrngeal

33

Pulls muscluar processes towards middle to ABduct vocal folds and open airway
a. cnxt and cause the arytenoid carts to swivel and twist so that the vocal processes end up farther apart and the rima glottidis opens up wider!

Posterior Cricoarytenoids

34

Innervation of Posterior Cricoarytenoids

recurrently larnygeal

35

Only muscle to open up the airway

Posterior Cricoarytenoids

36

This muscle is from muscular processes of arytenoid cartiledges→ posterior part of cricoid

Posterior cricoarytenoids

37

pulls arytenoid cartlage anteriorly to lower tension on vocal ligaments: ligaments become slack
Result: DECREASE pitch of voice

Thyroarytenoids

38

Decreases pitch of voice

Thyroarytenoids

39

Innervation of Thyroarytenoids

recurrent larnygeal

40

Only muslce innervated by external larnygeal

Cricothyroids

41

pulls muscluar processes anteriorly or forward to ADDUct vocal folds
the arythenoid cartiledges will go in opposite direction as what the posterior cricoarytenoids do by ABBducting or closing rima glottidis
Results = closes rima glottidis/aiway

Lateral Cricoarytenoids

42

ADDucts vocal cords

Lateral Cricoarytenoids

43

Innervation of Lateral Cricoarytenoids

recurrent

44

Nerve that has Both Sensory and motor
and 2 Branches: Internal and External

Superior Laryngeal N.

45

sensory to mucosa above vocal cords with ANS component
-pierces the thyrohyoid membrane

Internal Larnygeal N

46

Motor to cricothyroid muscle

External Laryngeal N.

47

1. Sensory to mucosa below the vocal folds
2. Motor to all Intrinsic muscles except cricothyroid muscle
3. Find in groove btwn trachea and esophogus

REcurrent L. N

48

travels w/ superior laryngeal n piercing the thyroihyoid membrane

Superior thyroid artery

49

Inability to move one of the vocal cords bc recurrent laryngeal is wiped out. Bad deal bc wipes out all intrinsics so can’t make sound! eeks

Recurrent laryngeal nerve palsy