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10 Cards in this Set
- Front
- Back
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Which are deficient posteriorly
-Hyoid bone - Thyroid cartilage - Cricoid cartilage |
Thyroid cartilage
Cricoid cartilage |
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Why is it deficient posteriorly
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Thyroid:
Laryngeal inlet sits here Allows air to enter pharynx Cricoid: Allows structures to lie behind it |
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Responsible for high pitch by lengthening vocal folds
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Cricothyroid
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What does the external laryngeal innervate & what is its origin?
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Motor to cricothyroid
Origin = superior laryngeal (vagus) |
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What does the internal laryngeal innervate & what is its origin?
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Sensory to mucosa above vocal ligament
Origin = superior laryngeal (vagus) |
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What does the inferior laryngeal innervate & what is its origin?
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Sensory to mucosa below level of vocal ligament
Origin = recurrent laryngeal |
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adducts vocal folds
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lateral cricoarytenoid
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low sound - relaxes vocal fold
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vocalis & thyroarytenoid
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abducts vocal fold
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posterior cricoarytenoid
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closes rima glottis
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transverse & oblique arytenoid
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