BONE
DEVELOPING BONE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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During endochondral ossification, what is the sixth step?
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secondary ossification centers form and replace cartilage with spongy bone. Osteoclasts reabsorb bone in the diaphysis to form the medullary cavity
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the epiphyseal plates are ossified
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primary ossification centers form in the diaphysis
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all of the cartilage is replace by bone except the articular cartilage and epiphyseal plates
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Explanation:
Detailed explanation-1: -When cartilage growth ceases, usually in the early twenties, the epiphyseal plate completely ossifies so that only a thin epiphyseal line remains and the bones can no longer grow in length.
Detailed explanation-2: -Small blood vessels infiltrate the outer layer of hyaline cartilage (1) Hyaline cartilage becomes (2) Mesenchymal cells differentiate into osteoblasts (3) Bone collar around the diaphysis is formed (4) Ossification begins in the center of the diaphysis, primary ossification center (5) Periosteal bud invades (6) More items
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