FACS action units (AU). AUs with “*” indicate that the criteria have changed for this AU, that is, AU 25, 26, and 27 are now coded according to criteria of intensity (25A-E), and AU 41, 42, and 43 are now coded according to criteria of intensity
Human Male and Female Skulls: African, Asian, and European (side view) — Comparative Set, Bone Clones.
Male (left) and female (right) skulls
Muscles of the face. Dentaltown - Dental Anatomy and Tooth Morphology