Vocalis Vocal process of
arytenoids cartilageVocal ligament Recurrent
laryngeal nerveSuperior and
inferior thyroid
arteriesTenses anterior vocal ligament
and relaxes posterior vocal
ligament
Transverse
and oblique
arytenoidsArytenoid cartilage Opposite arytenoid
cartilageRecurrent
laryngeal nerveSuperior and
inferior thyroid
arteriesCloses intercartilaginous
portion of rima glottidesJoints of the larynx and movements at the joints
Cricothyroid joints
Thyroid cartilage glides and rotates here
Changes length of vocal folds
Cricoarytenoid joints: movement of the arytenoids cartilage on the lamina of the cricoid
Slide towards each other and away from each other
Rotate
Tilt forward and backArterial supply to larynx
[Plate 69, Arteries of Oral and Pharyngeal Regions]Superior laryngeal artery
Through gap in thyrohyoid membrane
Supplies internal larynx
Accompanies by superior laryngeal nerve
Inferior laryngeal artery
Supplies inferior internal larynx
Accompanied by recurrent laryngeal nervepage 46
page 47Venous drainage of larynx