"Adductors and abductors: The lateral cricoarytenoid muscles pull the muscular processes anteriorly which rotates the arytenoid cartilages so that the vocal processes swing medially. They are the principal adductors. When they act with the transverse and oblique arytenoid muscles, which pull the arytenoid cartilages together, this brings about phonation. The only muscles that abduct the vocal folds are the posterior cricoarytenoid muscles. They pull the muscular processes posteriorly, which rotates the vocal processes laterally. The posterior cricoarytenoid muscles open the rima glottidis."
"Adductors and abductors: The lateral cricoarytenoid muscles pull the muscular processes anteriorly which rotates the arytenoid cartilages so that the vocal processes swing medially. They are the principal adductors. When they act with the transverse and oblique arytenoid muscles, which pull the arytenoid cartilages together, this brings about phonation. The only muscles that abduct the vocal folds are the posterior cricoarytenoid muscles. They pull the muscular processes posteriorly, which rotates the vocal processes laterally. The posterior cricoarytenoid muscles open the rima glottidis."
"Tensors: The cricothyroid muscles pull the angle of the thyroid cartilage anteriorly and inferiorly toward the arch of the cricoid cartilage, which causes elongation and tightening of the vocal ligaments. This brings about a higher pitch of phonation."
"Relaxers: The thyroarytenoid muscles pull the arytenoid cartilages anteriorly which reduces the vocal ligaments and therefore lowers the pitch of the voice."
"Fine adjustments: The vocalis muscles bring about this by selectively tensing and relaxing the anterior and posterior parts of the vocal folds. This action only occurs when the vocal folds are in contact for phonation, and therefore contributes to changes in pitch during animated speech or singing."
Expected headings
"Muscles of the inlet"
"Muscles of the vocal folds"
"Actions of the intrinsic muscles"
"vocalis muscle: originates at the lateral surface of the vocal process of the arytenoid cartilage; it inserts onto the ipsilateral vocal ligament"
"Many of these muscles also help contribute to closing and protecting the laryngeal inlet. The muscles involved are the lateral cricoarytenoids, transverse and oblique arytenoids, and aryepiglottic muscles. Contraction of these muscles brings the aryepiglottic folds together and pulls the arytenoid cartilages toward the epiglottis. The transverse arytenoid closes the posterior, intercartilaginous portion of the rima glottidis, to produce whispering."