Which of the following would be considered physiologic characteristics of immature or woven bone? It: Select all that apply
A) Has low tensile strength
B) Serves as temporary scaffolding for support
C) Serves as weight-bearing pillar
D) Is only found in mature adults
E) Is found in parts of a healing fracture
Ans: A, B, E
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Immature or woven bone, consisting of trabeculae, looks like poorly organized bone. It is deposited more rapidly than lamellar bone, has low tensile strength, and serves as temporary scaffolding for support. It is found in the developing fetus, in areas surrounding tumors and infections, and as part of a healing fracture. Laminar or mature bone is composed largely of cylinder-shaped units of calcified matrix, called osteons, that are oriented parallel to the long axis of the bone. Functionally, osteons can be thought of as tiny weight-bearing pillars.
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