aiding the cause or policy or interests of. 1  blessing, 2  help, 3  protagonism, 4  assist, 5  advocacy, 6  approving, 7  adhesion, 8  endorsement, 9  attachment, 10  reassurance, 11  approval, 12  adherence, 13  aid, 14  sponsorship, 15  assistance, 16  indorsement. 17  disapproval.
components, namely the mineral crystals and the organic matrix, can be discerned. The organic matrix of bone consists primarily of a fibrous protein, collagen, and lesser amounts of other noncollagenous proteins (discussed later). In tooth, collagen is also the major organic constituent of dentin and cementum, but there is no collagen in enamel. Collagen is the same protein that gives flexibility to ligaments and ten-
The skeleton is important both as a supporting structure and for maintenance of calcium, phosphate, and acid-base status in the whole organism. The functional part of bone, the bone matrix, is entirely extracellular. The bone matrix consists of protein and mineral. The protein forms the organic matrix.