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7 Cards in this Set
- Front
- Back
Intrinsic Laryngeal Muscles
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Cricothyroid
Posterior Crico-arytenoid (PCA) Superior Thyroarytenoid Thyroarytenoid: Muscularis Thyroarytenoid: Vocalis Interarytenoids: Oblique and Transverse |
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Transverse Arytenoid Attachments
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Origin: Lateral margin and posterior surface of one arytenoid.
Insertion: Lateral margin and posterior surface of the other arytenoid. |
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Transverse Arytenoid Action and Innervation
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Contraction: the two arytenoid cartilages approximate each other. The net action is adduction of the vocal folds. Innervation: Vagus (X) Recurrent Laryngeal Nerve. |
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Thyroarytenoid Muscularis Attachments
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Origin: Angle of thyroid, posterior surface.
Insertion: Fovea oblonga and base of the arytenoids. |
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Thyroarytenoid Muscularis Action and Innervation
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Contraction: Primarily serves as regulator of longitudinal tension, but also acts as a vocal fold adductor. Contraction loosens.
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Thyroarytenoid Vocalis Origin and Insertion
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Origin: Angle of thyroid; posterior surface.
Insertion: Latero-inferior aspect of the vocal process of the arytenoid. |
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Thyroarytenoid Action and Innervation
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Action: Primarily serves as regulator of longitudinal tension, but also acts as a vocal fold adductor. Contraction loosens.
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