calcified
being hardened by conversion into calcium compounds
convex
having a surface curve like the exterior of a circle
embryo
an unborn offspring in the process of development
fontanelles
spaces between the bones of the skull of an infant or fetus
herniation
abnormal projection of an organ or other body structure
longitudinal
running lengthwise rather than across
ossification
the process of turning into bone or bony tissue
osteoid
organic component of bone
periosteum
a dense layer of vascular connective tissue that envelops the bones
proportion
a part or number considered in comparison to a whole