Larynx Anatomy

Question 1

The larynx is located in the pre/post-tracheal fascia of the neck

Answer 1

Pretracheal fascia

Question 2

The larynx is located between which vertebral levels?

Answer 2

C4-C6

Question 3

Identify the cartilages of the larynx

Answer 3

Question 4

What can be done to close the oesophagus during ventilation?

Answer 4

Applying pressure to the cricoid

Question 5

Identify and name the three distinct laryngeal areas and the vocal cords

Answer 5

Question 6

The true vocal cords connect what structures?

Answer 6

Arytenoid cartilage to thyroid cartilage

Question 7

The false vocal cords connect what structures?

Answer 7

Arytenoid cartilage to epiglottis

Question 8

What are all intrinsic muscles of the larynx innervated by?

Answer 8

CN X

Question 9

The cricothyroid muscles cause relaxation/tension of the vocal cords?

Answer 9

Tension

Question 10

The thyroarytenoid muscles cause relaxation/tension of the vocal cords

Answer 10

Relaxation

Question 11

What pair of intrinsic laryngeal muscles adduct the vocal cords?

Answer 11

Lateral crico-arytenoid muscles

Arytenoid muscles

Question 12

What intrinsic laryngeal muscle abducts the vocal cords?

Answer 12

Posterior crico-arytenoid muscles

Question 13

What intrinsic muscles are contracting in forced respiration?

Answer 13

Posterior crico-arytenoids

Question 14

What intrinsic laryngeal muscles are contracting in normal speaking?

Answer 14

Arytenoids

Question 15

What intrinsic laryngeal muscles are contracting in whispering?

Answer 15

Lateral crico-arytenoid muscles

Question 16

Tumours that are superior to the rima glottidis will drain to which lymph nodes?

Answer 16

Superior deep cervical lymph nodes

Question 17

How do tumours of the rima glottidis/vocal cords present?

Answer 17

Voice changes

Question 18

Tumours that are below the rima glottidis will track to which lymph nodes?

Answer 18

Paratracheal lymph nodes

Question 19

In speech, what occurs anatomically before phonation (producing a sound in the larynx)?

Answer 19

Pressure is built in the respiratory tree inferior to larynx

Question 20

What occurs in phonation?

Answer 20

Air crosses vocal cords causing vibration in the larynx

Question 21

What structures will amplify the ‘buzz’ produced in the larynx?

Answer 21

Pharynx

Oral cavity

Nasal cavity

Question 22

To produce an oral sound, the soft palate must do what?

Answer 22

Tense and elevate to close off entrance into nasopharynx

Question 23

To produce nasal sounds, what must the soft palate do?

Answer 23

Tense and descend to close off entrance into the oropharynx

Question 24

What nerve innervates all intrinsic laryngeal muscles apart from the cricothyroid?

Answer 24

Inferior laryngeal nerve

Question 25

What nerve supplies motor innervation to the cricothyroid muscle?

Answer 25

External laryngeal nerve

Question 26

How do you clinically test CN X supply to the pharynx and larynx?

Answer 26

Ask patient to swallow water and speak