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Phonatory Muscles
Muscles of phonation
Question | Answer |
---|---|
Thyromuscularis (Thyroartyenoid) | primarily serves as regulator of longitudinal tension, but can also act as a vocal fold adductor (Intrinsic Laryngeal Muscle, Relaxer) |
Thyrovocalis (Thyroartyenoid) | Primarily serves as a regulator of longitudinal tension, but can also act as a vocal fold adductor (Intrinsic Laryngeal Muscle,Tensor) |
Superior Thyroarytenoid | Tilts thyroid back to relax vocal folds; pulls muscular processes forward to aid in medial compression (Intrinsic Laryngeal muscles, auxiliary musculature) |
posterior cricoarytenoid | the only abductor laryngeal muscle (Intrinsic Laryngeal muscle, abductor) |
lateral cricoarytenoid | adducts the vocal folds; unopposed, will relax the folds (Intrinsic Laryngeal muscle, adductor) |
oblique arytenoid | approximate the arytenoids for medial compression (Intrinsic Laryngeal muscle, adductor, part of "interarytenoids) |
Transverse Arytenoid | approximate the arytenoids for medial compression (Intrinsic, adductor, "interarytenoids" |
Cricothyroid | with thyroid anchored, elevates cricoid; with cricoid anchored, depresses thyroid; increases distance between thyroid and cricoid to increase vocal fold tension |
Digrasticus: Anterior Belly | Elevates hyoid or depresses mandible (Extrinsic, Suprahyoid) |
Digrasticus: Posterior Belly | Elevates hyoid or depresses mandible (Extrinsic, suprahyoid) |
Stylohyoid | Elevates hyoid up and back (Extrinsic, suprahyoid) |
Mylohyoid | Elevates hyoid or depresses mandible (Extrinsic, suprahyoid) |
Geniohyoid | With mandible anchored, pulls hyoid up and forward (Extrinsic, suprahyoid) |
Hyoglossus | Extrinsic tongue muscle; may help position larynx (Extrinsic, suprahyoid) |
Genioglossus | Extrinsic tongue muscle; may help position larynx (Extrinsic, suprahyoid) |
Thyrohyoid | Depresses hyoid or elevates thyroid (Extrinsic, infrahyoid) |
Sternohyoid | Depresses hyoid; anchors hyoid when mandible is opened against resistance (Extrinsic, infrahyoid) |
Omohyoid: Superior Belly | Prevents neck region from collapsing during deep inhalation (Extrinsic, infrahyoid) |
Ommohyoid: Inferior Belly | Prevents neck region from collapsing during deep inhalation (Extrinsic, infrahyoid) |
Sternothyoid | Depresses thyroid cartilage (extrinsic, misc.) |
Inferior Pharyngeal Constrictor | Provide resonance characteristics to speech (extrinsic, misc.) |