| Term | Definition |
| adductors | approximate the arytenoid cartilages and the vocal folds for phonation and for protective purposes - Transverse Interarytenoids, Lateral Cricoarytenoid (LCA), Oblique Interarytenoids |
| abductors | separate the arytenoids and vocal folds for respiratory activities - Posterior cricoarytenoid |
| relaxers | shorten and relax the vocal folds - Thyromuscularis |
| tensors | elongate and tighten the vocal folds - Thyrovocalis, cricothyroid, pars recta, pars oblique |
| medial compression | is the force with which vocal folds are brought together to make sound |
| longitudial tension | the degree of force stretching the vocal folds |
| Lateral Cricoarytenoid (LCA) | main muscle of adduction, important in regulating medial compression, brings vocal processes down and in when it contracts |
| Transverse Interarytenoids | Aid in medial compression -- helping you get loud |
| Oblique Interarytenoids | Between the arytenoids running at an oblique angle - criss cross |
| Posterior Cricoarytenoid (PCA) | Abduct the vocal folds - Lifts the arytenoids and vocal processes, up and out - have to engage to take a deep breath in - ONLY ABDUCTOR |
| Cricothyroid (CT) | 2 portions - pars oblique (pulls forward) & pars recta (erect, straight up and down) (pulls down) - effect together :stretch that cover (pull down and rock forward) |
| Thyroarytenoid (TA) | thyrovocalis (first) thryomusculars (second) |