External features of the 30-mm embryo.
Keywords: ankle, anus, auricle, buttock, cerebral hemisphere prominence, chin, elbow, external acoustic meatus, external nostril, knee, lens, liver prominence, lower eyelid fold, neck, nose, phallus (penis), sclera, shoulder, umbilical cord, upper eyelid fold, upper lip, wrist
Source: Atlas of Human Embryos.