MUSCULI SYRINGEALES
M. tracheobronchialis dorsalis
M. tracheobronchialis brevis
M. tracheobronchialis ventralis
M. syringealis dorsalis
M. syringealis ventralis
M. vocalis dorsalis
M. vocalis ventralis
M. obliquus ventralis
M. obliquus lateralis
M. syringealis superficialis
M. syringealis profundus
M. syringealis caudalis
Mm. syringeales
For an extensive review of the variation in the syringeal muscles in passerine and non-passerine birds, see Resp. Annot. 45, 46; for innervation, see PNS Annot. 30, 31, and 63.