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40 Cards in this Set
- Front
- Back
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What is the innervation of mylohyoid
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V trigeminal, mandibular branch
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What is the function of the Mylohyoid
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Elevates hyoid and tongue
Depresses mandible |
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What is the innervation of the Geniohyoid
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XII hypoglossal
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What is the function of the Geniohyoid
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Elevated hyoid and tongue
Depresses mandible |
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What is the Innervation of the Hypoglossus
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XII hypoglossal
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What is the function of the Hyloglossus
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XII Hypoglossal
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What is the innervation of the Genioglossus
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XII Hypoglossal
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What is the function of the Genioglossus
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Elevated the hyoid, protrudes the tongue
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Intrinsic muscles of the larynx
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Both origin and insertion within the larynx
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Landmarks of the Larynx
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Epiglottis
Aryepiglottic folds Laryngeal Aditus Laryngeal vestibule Ventricular fold/Fasle VF Laryngeal Ventricle True Vocal folds Conus elasticus Glottis Pyriform Sinuses |
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Aryepiglottic folds
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Membrane extending from arytenoid cartilage to epiglottis, contain cueniform cartilage, move medially together to seal off airway
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Laryngeal Aditus
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Entryway into larynx
Most superior space |
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Laryngeal vestibule
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Opening of larynx below epiglottis and aditus but above the false vocal folds
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Ventricular folds/ False vocal folds
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Located between the laryngeal vestibule and the laryngeal ventricle
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What is another name for the false vocal folds
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Ventricular folds
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Laryngeal Ventricle
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Lateral outpouching (space) between true and false vocal folds
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True Vocal folds
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Thyroarytenoid muscles
Vocal ligaments = upward extension of the conus elasticus |
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Conus Elasticus
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Also know as the cricothyroid membrane
Give support to anterior portion of vocal folds |
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Glottis
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Space between true vocal folds
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Pyriform sinuses
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Shallow depressions lateral to aryepiglottic folds at level of vocal folds
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What are the structures of the vocal folds
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1) Squamous epithelium
Lamina propria 2) Superficial layer of the lamina propria 3)Intermediate layer of the lamina propria 4)Deep layer of the lamina propria 5)Thyrovocalis muscle |
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Squamous epithelium
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This is the glisening white portion
Aids in the hydration by retention of fluid |
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Lamina propria
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Comprised of 3 different layers
Connective tissue |
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Superficial Layer of lamina propria
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Very elastic
Made of elastin fibers AKA Reinkes space |
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intermediate layer of lamina propria
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Elastic fibers
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Deep layer of the lamina propria
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Collagen fibers
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Thyrovocalis muscle
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Deep to lamina propria
Bulk of the vocal folds |
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THRYOARYTENOID
Thyrovocalis Insertion |
Vocal process of arytenoid
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THYROARYTENOID
Thyrovocalis Function |
Independently relaxes vocal fold
Co-operatively tenses vocal fold |
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THYROARYTENOID
Thyromuscular Function |
Relaxes the vocal folds
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What is the only paired muscle that abducts the vocal folds
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Posterior cricoarytenoid
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What is the function of the Posterior cricoarytenoid
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Abducts the vocal fold
pulls back on arytenoid |
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What is the function of the Lateral cricoarytenoid
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Adducts the vocal fold
Pulls forward on the arytenoid |
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INTERARYTENOID
Transverse arytenoid function |
Adducts the vocal folds
pulls arytenoids together |
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What is the only unpaired muscle in the larynx
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Transverse Arytenoid
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INTERARYTENOID
Oblique arytenoid function |
Adducts the vocal folds
Pulls the arytenoids together |
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Cricothyroid
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Main muscle responsibe for pitch
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What is the Function of the cricothyroid
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Pulls thyroid forward and down
Lenghtens vocal folds Incrases vocal fold tension Changes pitch |
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What muscles are innervated by the recurrent laryngeal branch of the vagus nerve
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Posterior cricoartenoid
Thyroarytenoid Lateral cricoarytenoid Interarytenoid (Transverse and oblique) |
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What muscles are innervated by the superior laryngeal branch of the vagus nerve
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Cricothyroid
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