Embryonic bone diaphysis, light micrograph

Numéro d’image : 13452217
Embryonic bone diaphysis, light micrograph
Peripheral area of the diaphysis of an embryonic bone, light micrograph. The periosteum is at right, showing two layers: an outer, or fibrous layer (pink), and an internal, or osteogenic layer, with a more cellular mesenchyme, where the osteoprogenitor cells are generated. In the more peripheral bone trabeculae, osteoid lines appear formed by osteoblasts that increases the thickness of the diaphyseal cortex. As can be seen in the image, the mean diameter of the trabeculae of immature bone tissue increases from the periosteum to the inside, since, once formed in the periosteum, new layers of bone matrix continue to be attached as time passes. In the internal part, resorption takes place and progressively augments the size of the medullary cavity.
Licence : Droits gérés
Crédit: Science Photo Library / JOSE CALVO
Taille de l’image : 3840 px × 3072 px
Model Release : Non requis
Property Release : Non requis
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