Intrinsic Muscles of the Larynx

Intrinsic Muscles of the Larynx - Intrinsic Muscles of the...

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Exam II Review COMD 501: Fall 2011 Intrinsic Muscles of the Larynx
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Thyroarytenoid: Thyrovocalis Origin : thyroid cartilage just below notch Insertion : vocal process of arytenoid cartilage Innervation : CN X - Vagus, recurrent laryngeal branch Function : tenses and stiffens vocal folds (results in shortening)
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Thyroarytenoid: Thyromuscularis Origin : thyroid notch, lateral to thyrovocalis muscle Insertion : muscular process and base of arytenoid cartilages Innervation : CN X - Vagus, recurrent laryngeal branch Function : shortens and adducts the vocal folds, closes muscular glottis
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Cricothyroid: pars recta Origin : anterior surface of cricoid cartilage beneath the arch Insertion : lower border of thyroid cartilage Innervation : CN X - Vagus, superior laryngeal branch Function : pulls thyroid and cricoid together, stiffens and lengthens vocal folds - change pitch
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Cricothyroid: pars oblique Origin : cricoid cartilage lateral to the pars recta
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This document was uploaded on 10/31/2011 for the course COMD 501 at South Carolina.

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Intrinsic Muscles of the Larynx - Intrinsic Muscles of the...

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