muscles of larynx

Question 1

Cricothyroid

Answer 1

O: Anterior cricoid cartilage
I:Inferior border of thyroid cartilage and its inferior horn
N:External branch of superior laryngeal nerve
A:Lengthens and tenses vocal ligaments

Question 2

Lateral cricoarytenoid

Answer 2

O:Arch of cricoid cartilage
I:Muscular process of arytenoid cartilage
N:Recurrent laryngeal nerve
A:Adducts vocal folds

Question 3

Posterior cricoarytenoid

Answer 3

O:Posterior surface of lamina of cricoid cartilage
I:Muscular process of arytenoid cartilage
N:Recurrent laryngeal nerve
A: Abducts vocal folds

Question 4

Vocalis

Answer 4

O:Vocal process of arytenoid cartilage
I:Vocal ligament
N:Recurrent laryngeal nerve
A:Tenses anterior vocal ligament, relaxes posterior vocal ligament

Question 5

Transverse and oblique arytenoid

Answer 5

O:Arytenoid cartilage
I:Opposite arytenoid cartilage
N:Recurrent laryngeal nerve
A:Closes intercartilaginous portion of rima glottides

Question 6

Thyroarytenoid

Answer 6

O:Posterior aspect of thyroid cartilage
I:Muscular process of arytenoid cartilage
N:Recurrent laryngeal nerve
A:Shortens and relaxes vocal cords, sphincter of vestibule