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13 Cards in this Set
- Front
- Back
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What structure provides the main mass of the vocal fold?
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Vocalis muscle
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Vocalis muscle is aka
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Thyroarytenoid
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What sort of epithelium covers the vocal folds?
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Squamous
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What is the main thing responsible for vocal fold shape and movement?
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Intrinsic Laryngeal muscle activity
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What contributes less to it?
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Extrinsic laryngeal muscle activity
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What 3 muscles CLOSE the vocal folds?
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-Lateral Cricoarytenoid
-Thyroarytenoid -Interarytenoid |
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Where does the lateral cricoarytenoid
-originate -insert |
Origin: lateral cricoid cartilage
Insert: Posterior mm process of Arytenoid cartilage |
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what else inserts on the muscular process of the cricoid cartilage?
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Posterior Cricoarytenoid
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What is the job of the posterior cricoarytenoid muscle?
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OPENs the vocal folds (abducts)
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So what opens and what closes the vocal cords?
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Close - lateral cricoarytenoids
Open - posterior cricoarytenoids |
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What innervates the posterior cricoarytenoid muscle and what can bilateral injury to it result in?
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-Recurrent laryngeal nerve
-Suffocation |
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What nerve gives rise to both the superior and recurrent laryngeal nerves?
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Vagus
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What does the left vs right recurrent laryngeal nerve loop around?
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Left - around the aortic arch
Right - around the r. subclavian artery |
