Bone Growth Plate #2
by Jose Calvo / Science Photo Library
Title
Bone Growth Plate #2
Artist
Jose Calvo / Science Photo Library
Medium
Photograph - Photograph
Description
Light micrograph of the epiphyseal growth plate of a developing long bone. At the top of the image, above the epiphyseal cartilage, is the epiphysis, with trabeculae of immature bone tissue separated by hematopoietic red bone marrow. In the cartilage, from epiphysis to diaphysis, the following layers are seen: zone of reserve, or resting, hyaline cartilage, zone of proliferation with the typical seriated, or columnar, cartilage formed by chondrocytes in an arrangement resembling piles of coins, zone of hypertrophy with large lacunae, zone of calcification (not visible as such, but can be identified by the degeneration of the chondrocytes leaving empty cartilaginous lacunae), and an ossification zone of compact appearance, where there is an invasion of blood vessels and osteogenic cells. Magnification: x36 when printed at 10 centimetres across.
Uploaded
September 30th, 2018
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