Cricothyroid
mylohyoid
digastricus anterior
thyromuscularis
omohyoid inferior head
thyrohyoid
omohyoid superior head
lateral cricoarytenoid
sternohyoid
sternothyroid
posterior cricoarytenoid
geniohyoid
stylohyoid
transverse arytenoid
digasticus posterior
thyrovocalis
oblique arytenoid
originates at the upper border of scapula, depresses hyoid, infrahyoid
depresses mandible, elevates larynx/hyoid, suprahyoid
originates at the intermediate tendon, depresses hyoid, infrahyoid
moves larynx back, elevates larynx/hyoid, suprahyoid
abduct, instrinsic
pars recta/oblique, tensor, pitch change, intrinsic
depresses hyoid, infrahyoid
depresses mandible, moves laryngeal forward, elevates the larynx/hyoid, suprahyoid
moves larynx forward, elevates larynx/hyoid, suprahyoid
adduct, (vital in vocal intensity), intrinsic
adduct, intrinsic, pulls apex medially
tensor, part of thyroarytenoid, intrinsic
depresses larynx/hyoid, extrinsic
relaxor, part of thyroarytenoid, intrinsic
elevates larynx, depresses hyoid, extrinsic
adduct, intrinsic, increase medial compression
retracts the larynx/hyoid, elevates the larynx/hyoid, suprahyoid
Suprahyoid
adduct
elevators
relaxors
infrahyoid
abduct
thyroarytenoid
Extrinsic
intrinsic
depressors
two movements of the larynx
tensors
to come apart 1
to bring together 3
laryngeal depressors 2 (but 1 has 2 heads)
combination of thyrovocalis and thyromuscularis
forward and back 2:1
7
5
provide adjustment for phonation Both components in the larynx 6
muscles that elongate and tense the vocal folds 2
muscles that relax and shorten the VF 1
laryngeal elevators (above the hyoid) 5
laryngeal support and fixation one component outside the larynx 2