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What are bones composed of?

Answer:

Bones and teeth (which are just specialized bones), belong to the hard connective tissues group, along with cartilage. Bones are made by a process known as ossification. Cells called osteoblasts lay down a cartilage template that gets filled with calcium and phosphorus in the area between the cells called the extracellular matrix. When they are done depositing these minerals, the osteoblasts become osteocytes, mature bone cells. The hard matrix that surrounds them now becomes what we call our bones and teeth. Teeth have an additional covering of enamel which is harder than actual bone.

First answer by Natural Val. Last edit by Natural Val. Contributor trust: 2474 [recommend contributor recommended]. Question popularity: 26 [recommend question].

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