Assertion: frontal bone's surface | /r/HasProperty | concavoconvex
Facets:
Source sentences:
text: Surfaces.The outer surface (Fig. 155) is concavoconvex from above downward, convex from side to side; it is covered by the Procerus and Compressor naris, and perforated about its center by a foramen, for the transmission of a small vein.