| Term | Definition |
|---|
| intrinsic muscles | regulate tension in the vocal ligament and the size and shape of glottal space. fine tuning of larynx |
| glottal space | regulate respiratory flow. want vocal cords to vibrate at different rates. increase and decrease tension on vocal cords. |
| recurrent and superior laryngeal nerve | these are bilaterally innervated by CN X (vagus) |
| recurrent laryngeal nerve (RLN) | innervated all but one intrinsic muscle (king) |
| superior laryngeal nerve (SLN) | innervates one intrinsic muscle |
| internal branch, external branch | what are the branches of the superior laryngeal nerve? |
| internal branch | branch: sensory from larynx. makes u cough when liquid goes into vocal cords/trachea |
| external branch | branch: motor to cricothyroid muscle. |
| cricothyroid muscle | helps thyrocartilage tip forward. vocal |
| vagus nerve (CN X) | long nerve. shorter on right cause no heart there. |
| lateral cricoarytenoid, transvers arytenoid, oblique (inner) arytenoid | what are the adductor muscles? |
| oblique arytenoid | pulls arytenoid cartilage inwards. |
| posterior cricoarytenoid | what is the abductor muscle? |
| aryepiglottic fold | tissue that surrounds aryepiglottic muscle. within that is false vocal folds |
| tensors | these muscles tip forward, causes tension on vocal folds |
| thyrovocalis (internal thyroarytenoid), cricothyroid | what are the tensor muscles? |
| thyromuscularis (external thyroarytenoid) | what is the relaxer muscle? |
| thyrovocalis & thyromuscularis | together make up thyroarytenoid |
| thryroarytenoid muscle | _____ muscle shortens (changes the shape of) the vocal fold when contracted. |
| thyrovocalis (medial), and thyromuscularis (lateral) | thyroarytenoid muscle shortens (changes the shape of) the vocal fold when contracted. 2 portions: |
| tenses | thyrovocalis (medial) :tenses or relaxes? |
| relaxes | thyromuscularis (lateral): tenses or relaxes? |
| adduct | what happened if vocal folds moved inward? |
| posterior cricoarytenoid | makes arytnoid cartilage rotate outwards. vocal folds=abduct |
| lateral cricoarytenoid and interarytenoid | what two makes the vocal cords rotate towards midline (inward). vocal folds adduct |
| cricothyroid | tilts thyroid cartilage forward (tension on vocal cords) |
Combine with other sets
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