Mechanisms of Deglutiton and Phonation: The Larynx Flashcards Preview

Structure and Function Test 1 > Mechanisms of Deglutiton and Phonation: The Larynx > Flashcards

Flashcards in Mechanisms of Deglutiton and Phonation: The Larynx Deck (37):
1

Acts as a compound sphincter to prevent the passage of food or drink into the airway during swallowing

Larynx

2

Acts to close the rima glottis during Valsalva's maneuver in which air pressure is built up during coughing, sneezing, micturition, defecation, or parturition

Larynx

3

Also regulates the flow of air to and from the lungs for breathing and vocalization

Larynx

4

The larynx is composed of cartilages connected via

Joints and ligaments

5

There are 4 major cartilages of the larynx. What are they?

The unpaired thyroid, cricoid, and epiglottic cartilage, and the paired arytenoid cartilages

6

Composed of two lamina that unite anteriorly to form the laryngeal prominance

Thyroid cartilage

7

The thyroid cartilage is connected superiorly to the hyoid bone by the thyrohyoid membrane and inferiorly to the cricoid cartilage by

Synovial joints and cricothyroid membrane

8

Attached to the thyroid cartilage internally where the lamina unite

Epiglottis

9

Articulates with the thyroid cartilage and arytenoid cartilages via synovial joints

Cricoid cartilage

10

Sit atop the cricoid cartilages posteriorly

Arytenoid cartilages

11

The arytenopid cartilages are pyrimidal in shape with which three processes?

Superiorly: an apex
Anteriorly: a vocal process
Laterally: a muscular process

12

Additional cartilages attach to the

Apex

13

The vocal ligament attaches to the

Vocal process

14

Muscles attach to the

Muscular process

15

Attatches inferiorly to the superior border of the cricoid cartilage

Cricothyroid ligament (Conus elasticus)

16

The superior free edges of the cricothyroid ligament (conus elasticus) forms the

Vocal ligament

17

Attaches posteriorly to the vocal process of the arytenoid cartilages and anteriorly where the lamina of the thyroid cartilage uite

Vocal ligament

18

The larynx can be divided from superior to inferior into which three compartments?

1.) Vestibule
2.) Ventricle
3.) Infraglottic cavity

19

Extends from the aditis superiorly to the vestibular folds inferiorly

Vestibule

20

The lateral wall of the vestibule are formed by the

Quadrangular membrane

21

Connective tissue that stretches from the epiglottis to the arytenoid cartilages

Quadrangular membrane

22

The free inferior edge of the quadrangular membrane

Vestibular ligament

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The quadrangularmembrane is covered on both sides by a

Mucous membrane

24

Where the vestibular ligament is covered bymucosa

Vestibular fold (false vocal fold)

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Lateral expansions of the laryngeal cavity between the vestibular and vocal folds

Ventricles

26

Toward the anterior end of the ventricle there is a blind sac called the

Saccule

27

Can become enlarged due to increase in intraorthotic pressure

Saccule

28

Extends from the vocal folds to the lower border of the cricoid cartilage

Infraglottic cavity

29

The larynx is innervated ENTIRELY by branches of the

Vagus nerve

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What are the three vagus nerve branches relevant to the larynx?

Internal laryngeal, external laryngeal, and recurrent laryngeal/inferior laryngeal

31

What type of fibers are in the internal laryngeal nerve?

Sensory

32

What type of fibers are in the external laryngeal nerve?

Motor

33

What type of fibers are in the recurrent laryngeal/inferior laryngeal nerve?

Sensory and motor

34

The internal laryngeal nerve innervates the

Mucosa above the vocal fold

35

The external laryngeal nerve innervates the

Cricothyroid muscle

36

The SENSORY fibers of the recurrent laryngeal/Inferior laryngeal nerve innervates the

Mucosa below vocal fold

37

The MOTOR fibers of the recurrent laryngeal nerve innervate the

Remaining intrinsic muscles

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