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Laryngeal Muscles
Stack #171796
| Question | Answer |
|---|---|
| What is the function of the cricothyroids? | Glottal tensor |
| What is the function of the thyroarytenoids? | Glottal tensor |
| What is the function of the posterior cricoarytenoids? | Abductor |
| What is the function of the arytenoids? | Adductor |
| What is the function of the lateral cricoarytenoids? | Adductor |
| What is the function of the thyroarytenoids? | Glottal relaxers |
| What purpose do the extrinsic laryngeal muscles serve? | Support the larynx and fix it in position |
| What purpose do the intrinsic laryngeal muscles serve? | Control sound production |
| What purpose do the suprahyoid muscles serve? | Elevate the larynx |
| What purpose do the infrahyoid muscles serve? | Depress the larynx |
| What are the extrinsic muscles? | Sally Thanks Iggy For Cock (sternothyroid, thyrohyoid, inferior pharyngeal constrictor) |
| Origin and Insertion of sternothyroids? | Manubrium and thyroid cartilage |
| Purpose of the sternothyroids? | Draws thyroid cartilage down |
| Origin and Insertion of thyrohyoids? | Thyroid lamina and greater horn of hyoid |
| Purpose of thyrohyoids? | Decreases distance between thyroid cartilage and hyoid bone |
| Location of inferior pharyngeal constrictors? | Lower portion of thyroid and cricoid cartilages |
| Purpose of inferior pharyngeal constrictors? | Swallowing and forming principal resonance cavity |
| What are the suprahyoid muscles? (laryngeal elevators) | Dirty Sluts Make Jenny Hate Jerry (digastric, stylohyoid, mylohyoid, geniohyoid, hyoglossus, genioglossus) |
| Origin and insertion of anterior belly of digastric? | Mandible and lesser horn of hyoid |
| Origin and insertion of posterior belly of digastric? | Mastoid and sternocleidomastoid |
| Function of the digastric? | Raises the hyoid or depresses lower jaw |
| Origin and insertion of stylohyoid? | Styloid process and hyoid |
| Function of the stylohyoid? | Draws the hyoid bone up and backwards |
| Location of the mylohyoid? | Floor of the mouth |
| Function of the mylohyoid? | Raises hyoid, mouth floor and tongue (swallowing). Depresses mandible |
| Location of the geniohyoid? | Superior to mylohyoid, insert on hyoid |
| Function of geniohyoid? | Pulls the hyoid up and forward (when mandible is fixed) |
| Description of hyoglossus? | Extrinsic tongue muscle, originates from greater horns of hyoid |
| Origin and insertion of genioglossus? | Mental symphysis and body of hyoid (extrinsic tongue muscle) |
| Function of genioglossus? | Elevates hyoid and draws it forwad |
| What are the infrahyoid muscles? (laryngeal depressors) | Sternohyoid and omohyoid |
| Origin and insertion of sternohyoid? | Manubrium and lower border of hyoid |
| Function of sternohyoid? | Draws hyoid down and fixes it |
| Origin and insertion of inferior/posterior belly of omohyoid? | Scapula and intermediate tendon |
| Origin and insertion of superior/anterior belly of omohyoid? | Intermediate tendon and greater horn of hyoid |
| Function of omohyoid? | Prevents neck from collapsing during inhalation |
| Function of intrinsic abductors? | Separate arytenoids and vocal folds for respiration |
| Function of intrinsic adductors? | Approximate arytenoids and vocal folds for phonation |
| Function of intrinsic tensors? | Elongate vocal folds |
| Function of intrinsic relaxers? | Shorten vocal folds |
| What is medial compression? | The extent of force with which the vocal folds are brought together at the midline |
| What is longitudinal tension? | The degree of stretching force |
| Components of the thyroarytenoid? | Vocalis and thyromuscularis |
| Action of thyroarytenoid? | Twisted when vocal folds are adducted and unwound when vocal fold s are abducted |
| Histology of vocal fold? | epithelium, superficial layer of lamina propria, intermediate layer of lamina propria, deep layer of lamina propria, vocalis muscle |
| Cover of vocal fold? | Epithelium and superficial lamina propria |
| Transition of vocal fold? | Intermediate and deep layers of lamina propria |
| Body of vocal fold? | Vocalis muscle (passive and active) |
| What is a mucosal wave? | Wave produced in phonation, reliant on superficial layer of lamina propria |
| Function of thyroarytenoid? | Regulator of longitudinal tension, close glottis or increase vocal fold tension (adductor, tensor or relaxer) |
| Function of thyroarytenoid? | Tilts thyroid cartilage back to relax vocal folds and pulls on muscular process of arytenoids to aid in compression (relaxer) |
| Function of posterior cricoarytenoid? | Singular abductor (lateral bundle is abductor and remainder stabilizes/fixes arytenoids)--approximation and depression |
| Function of lateral cricoarytenoid? | Glottal adductor and relaxer, rotates arytenoid cartilage to bring vocal processes to midline, regulates medical compression and shapes glottis for whisper |
| Function of oblique arytenoids? | Approximate arytenoid cartilages and regulate medial compression |
| Function of transverse arytenoids? | Make arytenoid cartilages slide along articular capsule toward midline |
| Function of cricothyroid? | Tenses and elongate vocal folds, increase distance between vocal processes and vocal folds for pitch changes |
Created by:
kimmcsorley
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