title: Frequency of occurrence of the zygomandibularis muscle: a recently described structure.
abstract: Many anatomical variations of the infratemporal area exist: muscle fusion, muscle belly separation, distinctly different origins, and both separate and aponeurotic insertions. This study is an attempt to find the frequency of occurrence of the zygomandibularis muscle, a recently described human structure. The zygomandibularis muscle may occur unilaterally, bilaterally, or may be absent, in this study, 23 female caucasian cadavers and 27 male caucasian cadavers were evaluated; the zygomandibularis muscle was found in 42% of the population of 50 cadavers.
authors.affiliation: University of Texas Southwestern Medical School, Dallas, USA.
authors.forename: S V
authors.initials: SV
authors.lastname: Cole
authors.forename: J E
authors.initials: JE
authors.lastname: Smith
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002102:Cadaver; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012727:Sex Characteristics; D013703:Temporal Muscle / Q000033:anatomy & histology*; D015050:Zygoma / Q000033:anatomy & histology