Larynx

Question 1

Skeleton

Answer 1

Hyoid bone

Question 2

Cartilages

Answer 2

Upaired (3)
Epiglottic
Thyroid
Cricoid (circular)
Paired (3)
Arytenoid
Corniculate
Cuneiform

Question 3

Ligaments

Answer 3

Thyroid membrane
Cricothyroid Ligament
Vocal Ligament (true vocal folds)
Vestibular Ligament (false vocal folds)
Quadrangular Membrane

Question 4

Subdivisions

Answer 4

Vestibule - area of larynx above vestibular fold
Ventricle - lateral extensions of larynx btw vocal and vestibular folds
Infraglottic cavity - area of larynx below vocal folds

Question 5

Extrinsic Muscles

Answer 5

Suprahyoid and Infrahyoid

Question 6

Intrinsic Muscles

Answer 6

Posterior Cricoarytenoid
Lateral Cricoarytenoid and Transverse Arytenoid
Cricothyroid
Thyroartenoid and vocalis

Question 7

Posterior Cricoarytenoid - Action

Answer 7

Abducts (opens) vocal folds

Question 8

Lateral Cricoarytenoid and Transverse Arytenoid - Action

Answer 8

Adducts (closes) the vocal folds

Question 9

Cricothyroid - Action

Answer 9

Tenses (tightens) vocal folds

Question 10

Thyroartenoid and vocalis

Answer 10

Relaxes the vocal folds

Question 11

Vascular Supply

Answer 11

Superior and Inferior Laryngeal arteries off the Superior and Inferior Thyroid arteries

Question 12

Nerve Supply - Sensory

Answer 12

Branches of Vagus -

1. Internal Laryngeal nerve (mucous membranes from superior surface of vocal folds and area above)
2. Recurrent Laryngeal nerve (mucous membranes from inferior surface of vocal folds and area below)

Question 13

Nerve Supply - Motor

Answer 13

Branches of Vagus -

1. External Laryngeal nerve (cricothyroid only)
2. Recurrent Laryngeal nerve (all intrinsic muscles of larynx except cricothyroid)