Assertion: rib's border | /r/HasProperty | concave
Facets:
Source sentences:
text: The inner border is concave, thin, and sharp, and marked about its center by the scalene tubercle.
text: The outer border is convex, thick, and rounded, and at its posterior part gives attachment to the first digitation of the Serratus anterior; the inner border is concave, thin, and sharp, and marked about its center by the scalene tubercle.