Tiedosto:Orbicularis oris.jpgOrbicularis oris muscle From Gray's Anatomy, muscle highlighted in red https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain
Tiedosto:Illu head neck muscle.jpghttp://training.seer.cancer.gov/module_anatomy/images/illu_head_neck_muscle.jpg https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public
Tiedosto:Illu head neck muscle zh.jpgis a derivative work of the following images: File:Illu head neck muscle.jpg licensed with PD-USGov 2010-03-05T21:50:58Z McGeddon~commonswiki 524x307