larynx muscles Flashcards
What are the 6 elevators of the larynx?
Thyrohyoid Stylohyoid Mylohyoid Digastric Stylopharyngeus Palatopharyngeus
what are the 3 depressors of the larynx?
Omohyoid
Sternohyoid
Sternothyroid
what is the job of the extrinsic muscles of the larynx?
move the larynx as a whole
which is the only intrinsic muscle that is visible and NOT innervated by the recurrent laryngeal nerve?
cricothyroid muscle
what is the origin and insertion of the cricothyroid muscle?
O: cricoid cartilage
I: inferior horn and lower lamina of the thyroid cartilage
what is the origin and insertion of the cricoarytenoid muscle?
O: posterior surface of lamina of cricoid cartilage
I: muscular process of arytenoid cartilage
what is the origin and insertion of the lateral cricoarytenoid muscle?
O: arch of cricoid cartilage
I: muscular process of arytenoid cartilage
what is the origin and insertion of the transverse arytenoid muscle?
O: posterior surface of arytenoid cartilage
I: posterior surface of opposite arytenoid cartilage
What is the origin and insertion of the oblique arytenoid muscle?
O: muscular process of the arytenoid cartilage
I: apex of opposite arytenoid cartilage
What is the origin and insertion of the aryepiglottic muscle?
O: apex of arytenoid cartilage
I: side of epiglottic cartilage
what is the origin and insertion of the thyroepiglottic muscle?
O: inner surface of the thyroid lamina
I: lateral margin of the epiglottis
what is the origin and insertion of the thyroarytenoid muscle?
O: inner surface of the thyroid lamina
I: arytenoid cartilage
what is the origin and insertion of the vocalis muscle?
O: inner surface of thyroid lamina
I: vocal process of arytenoid cartilage
Which muscle tenses the vocal cords and raises pitch of voice?
Cricothyroid
Which muscle ABducts the vocal folds?
Posterior cricoarytenoid muscle