W23-L8: Larynx and Laryngopharynx Flashcards Preview

Matt's Block 06 - Neuro block > W23-L8: Larynx and Laryngopharynx > Flashcards

Flashcards in W23-L8: Larynx and Laryngopharynx Deck (18)
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1
Q

What is the upper and lower border of the Larynx?

A

Epiglottis above, C6/lower border of cricoid cartilage

2
Q

What makes up the laryngeal skeleton?

A
Superior to inferior:
Hyoid bone 
Hyoid-thyroid membrane
Thyroid cartilage
Thyroid-cricoid membrane
Cricoid cartilage
3
Q

Where do the vocal ligaments sit?

A

Inside the thyroid cartilage

4
Q

Where does the cricoid cartilage articulate with the thyroid cartilage?

A

The inferior horn

5
Q

What is the posterior wall of the thyroid?

A

Laryngeal Inlet

6
Q

What attaches to the arytenoid cartilages?

A

vocal ligaments attach
to anterior processes of arytenoid cartilage, posterior is for
internal muscles of the larynx

7
Q

Where does the epiglottis originate from?

A

posterior aspect of angle of the thyroid cartilage

8
Q

How many vocal ligaments are there?

A

2

9
Q

How many mucosal folds are there?

A

2, superior one is vestibular fold, inferior covers vocal ligament

10
Q

For phonation and breathing where are the vocal ligaments?

A

Vocal ligaments need to be adducted for phonation, abducted for breathing

11
Q

What muscles alter the position of vocal ligaments?

A

Intrinsic muscles of the larynx

12
Q

What are the two main nerves that supply the larynx?

A

Superior laryngeal (splits into two) and recurrent which becomes the inferior laryngeal

13
Q

What are the branches of the superior laryngeal and what do they supply?

A

External Laryngeal: Cricothyroid

Internal Laryngeal: Sensory to mucosa above laryngeal ligaments

14
Q

What does the inferior laryngeal supply?

A

Intrinsic muscles except cricothyroid and sesnory innervation to mucosa below laryngeal ligaments

15
Q

What is the blood supply to the larynx?

A

Comes from above (superior laryngeal vessel with internal laryngeal nerve) and Below (inferior thyroid which is directly anterior to trachea)

16
Q

What is preferable to tracheotomy for emergency airway?

A

Cricothyroid memrbane puncture as better than directly into trachea to avoid inferior thyroid veins

17
Q

What is the Aryepiglottic fold?

A

Lateral boundaries of laryngeal inlet

18
Q

What is the motor nerve supply of the pharynx?

A

Most CN X except for Stylopharyngeus (CN IX)

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