Intrinsic Laryngeal Muscles

Question 1

Abductor Muscles

Answer 1

-arytenoids away from the midline

Question 2

Adductor Muscles

Answer 2

• arytenoid towards the midline

Question 3

Tensor Muscle

Answer 3

• elongate and tense the vocal folds

Question 4

Relaxer Muscles

Answer 4

• shorten the vocal folds

Question 5

Thyroarytenoid: Vocalis

Answer 5

• contraction draws the cricoid and thyroid cartilages apart, tensing the vocal folds
  Innervation: recurrent laryngeal nerves

Question 6

Thyroarytenoid: Muscularis

Answer 6

• contraction draws the arytenoid cartilages forward, relaxing and adducting the vocal folds
• Innervation: recurrent laryngeal nerve

Question 7

Posterior Cricoarytenoid

Answer 7

• ONLY ABDUCTOR
• Innervation: recurrent laryngeal nerve

Question 8

Lateral Cricoarytenoid

Answer 8

• Adductor
• Innervation: recurrent laryngeal nerve

Question 9

Interarytenoid

Answer 9

• Adductor
• Innervation: recurrent laryngeal nerve

Question 10

Cricothyroid

Answer 10

• lengthening and tensing = increased pitch
• Pars Recta: rocks thyroid cartilage down
• Pars Oblique: glides thyroid cartilage forward
• Innervation: external branch of the superior laryngeal nerve