larynx muscles

Question 1

cricothyroid

Answer 1

intrinsic, tensor, lengthens and tenses vocal folds (changing pitch), rocks the thyroid forward in relation to the cricoid cart; 2 bellies- pars recta and pars oblique, bilateral cricoid cart to thyroid cart, innervated by ESLN

Question 2

motor innervation for larynx muscles

Answer 2

CN X- Vagus
recurrent laryngeal nerve (below vocal folds) and external superior laryngeal nerve
(cricothyroid only ESLN)

Question 3

sensory innervation

Answer 3

CN X- vagus

Question 4

thyroarytenoid- thyrovocalis

Answer 4

intrinsic, tensor, tenses vocal folds, medial part of vocal folds, contraction draws thyroid and cricoid cart father apart, courses thyroid cart and arytenoid cart

Question 5

thyroarytenoid- thryomuscularis

Answer 5

intrinsic, relaxer, lateral portion of vocal folds, relaxes vocal folds, courses thyroid cart and arytenoid cart

Question 6

lateral cricoarytenoid

Answer 6

intrinsic, adductor, causes arytenoid to move forward and medially, primary means of vocal adduction, courses cricoid cart and arytenoid cart

Question 7

transverse interarytenoid

Answer 7

intrinsic, adductor, medial compression(loudness and intensity) of vocal folds, courses between paired arytenoids ==

Question 8

oblique interarytenoids

Answer 8

intrinsic, adductor, causes medial vocal compression, rocks arytenoids down and in, connects between paired arytenoid X

Question 9

posterior cricoarytenoid

Answer 9

intrinsic, abductor, active during forced abduction for respiration and voiceless consonants (opens the airway back up), courses arytenoids and epiglottis

Question 10

aryepiglottic

Answer 10

intrinsic, auxiliary, aids in laryngeal vestibular closure- epiglottic invasion, pivots arytenoids forward, courses arytenoids and epiglottis

Question 11

thyrepiglottic

Answer 11

intrinsic, auxiliary, brings epiglottis and thyroid cart closer together, moves epiglottis anterior and upright, courses epiglottis and thyroid