ossified
(adjective)
composed of bone, which is a calcium phosphate matrix created by special cells called osteoblasts
Examples of ossified in the following topics:
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The Hyoid Bone
- The hyoid ossifies towards the end of fetal development, commencing in the greater cornua before completing in the body shortly after birth.
- The greater cornua and body are initially connected by fibrous material although this ossifies towards middle age.
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Sutures
- In old age the cranial sutures may ossify completely, reducing the amount of elasticity present in the skull.
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Growth of Bone
- On the diaphyseal side, cartilage is ossified, allowing the diaphysis to grow in length.
- It is considered a part of the growth plate: the part of the bone that grows during childhood, which, as it grows, ossifies near the diaphysis and the epiphyses.
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Sutures
- At some sutures, the connective tissue will ossify and be converted into bone, causing the adjacent bones to fuse to each other.
- Late in life, the sagittal, coronal, and lambdoid sutures of the skull will begin to ossify and fuse, causing the suture line to gradually disappear.
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Bone Remodeling and Repair
- This is similar to the endochondral formation of bone when cartilage becomes ossified; osteoblasts, osteoclasts, and bone matrix are present.
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Gnathostomes: Jawed Fishes
- Nearly all bony fish have an ossified skeleton with specialized bone cells (osteocytes) that produce and maintain a calcium phosphate matrix.
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Structure, Type, and Location of Cartilage
- In the embryo, bones form first as hyaline cartilage before ossifying as development progresses.