Anatomy of Phonation

Question 1

What are two functions of the Larynx?

Answer 1

• Seal to respiratory system
• Phonation

Question 2

Where is Larynx located?

Answer 2

Situated between the pharynx and the trachea

Question 3

Name the 7 cavities of the Laryngeal Region

Answer 3

1. Valleculae
2. Pyriform Sinus
3. Aditus
4. Vestibule
5. Ventricle
6. Glottis
7. Subglottal Atrium

Question 4

Valleculae

Answer 4

Located at base of tongue

Between tongue and the epiglottis

Question 5

Pyriform Sinus

Answer 5

Located at the back of the larynx/pharynx

Between thyroid and pharyngeal wall.

Entrance to esophagus

Question 6

Aditus

Answer 6

Superior margin of th larynx

Question 7

Vestibule

Answer 7

Upper cavity of the larynx between aditus and the “false” vocal folds

Question 8

Ventricle

Answer 8

Laterally space between the false vocal folds and the true vocal folds

Question 9

Glottis

Answer 9

Space between vocal folds

Question 10

Sub-glottal Atrium

Answer 10

Entry to the trachea

Question 11

Hyoid Bone

(name subparts)

Answer 11

U shaped

Corpus, Greater Cornu, Lesser Cornu

Flexible elavation of larynx

Question 12

Hyoid Functions

Answer 12

• Superior attachment for some extrinsic laryngeal muscles
• Supportive structure for root of tongue
• Laryngeal cartlilages and hyoid pulled together as part of swallow

Question 13

Cricoid Cartilage

Answer 13

Upper most tracheal ring

Foundation of the larynx to which thyroid and arytenoids attach

Question 14

Thyroid Cartilage

Answer 14

• Thyroid Laminae-two frontal plates
• Superior & Inferior cornu

Question 15

Cricoid-Thyroid Articulation

Answer 15

Allows for a variety of movements

forward/down

forward and back

Question 16

Arytenoid Cartilages

Name 4 Parts

Answer 16

Pair of small pyramid-shaped cartilages

• Apex
• Base
• Vocal Processes
• Muscular Processes

Question 17

Cricoid-Arytenoid Articulation

Answer 17

Joint allows for

left-right movement

rotating to move downward toward midline

Question 18

Corniculate & Cuneiform Cartilages

Answer 18

Corniculate- just above arytenoid carts

Cuneiform- anterior & lateral to ^

Function- provide additional structure to the aryepiglottic folds to stiffen them

Question 19

Thyrohyoid Connections (3)

Answer 19

• Lateral thyrohyoid ligament (sup cornu to greater cornu)
• Medial thyrohyoid ligament (notch of sup lamina to corpus of hyoid)
• Thyrohyoid membrane (fills in space between inferior hyoid & superior thyroid)

Question 20

Epiglottal Connections (3)

Answer 20

• Hyoepiglottic Ligament- corpus of hyoid to epiglottis
• Thyroepiglottic Ligament- Thyroid lamina to lower stem of epiglottis
• Glossoepiglottic Ligaments- sides of tongue to lower sides of epiglottis