Larynx

Question 1

What is the function of larynx?

Answer 1

• Phonation – voice production
• Component of the respiratory tract
• Involved in cough reflex – forced expiration of air against a closed glottis.

Question 2

Where is the larynx located at?

Answer 2

C4-C6/7

Question 3

What fascia enclosed the larynx

Answer 3

Prevertebral fascia closes the visceral layer of trachea

Question 4

What are the 3 unpaired cartilages

Answer 4

Cricoid, thyroid and epiglottis

Question 5

What are the paired cartilages

Answer 5

Arytenoid, corniculate and cuneiform

Question 6

What are the intrinsic muscle innervated by

Answer 6

By vagus nerve

Question 7

What is the blood supply for the larynx

Answer 7

Superior thyroid artery from external carotid which splits into sup/inf laryngeal art

Question 8

What are the two ligaments of larynx?

Answer 8

Vocal (mid) and vestibular (lat)

Question 9

How many muscles for the larynx and what are they

Answer 9

Post crico-arytenoid, lat crico-arytenoid, transverse arytenoid, thyroarytenoid, vocalis, cricothyroid

Question 10

Posterior cricoarytenoid

Answer 10

External rotation and abducts

Question 11

Lateral crick-arytenoid

Answer 11

Medial rotation inwards and adduction

Question 12

Transverse

Answer 12

Adduction of arytenoids

Question 13

Thyroarytenoid and vocalis

Answer 13

Relaxed

Question 14

Cricothyroid

Answer 14

Lengthens the vocal folds

Question 15

What innervates the cricothyroid

Answer 15

External laryngeal nerve

Question 16

What nerve innervates the rest of laryngeal muscles

Answer 16

Recurrent laryngeal nerve

Question 17

What nerve innervates the rest of laryngeal muscles

Answer 17

Recurrent laryngeal nerve