The following are major steps in the process of endochondral ossification: 1. Bone forms at the diaphysis surface. 2. Secondary ossification centers form in the epiphyses. 3. Chondrocytes enlarge and calcify. 4. Osteoclasts create a marrow cavity. 5. Blood vessels invade the inner cartilage and new osteoblasts form spongy bone at a primary ossification center. The correct order for these events is
A) 3, 1, 5, 4, 2.
B) 1, 3, 5, 4, 2.
C) 1, 5, 3, 4, 2.
D) 2, 3, 1, 5, 4.
E) 3, 1, 4, 5, 2.
A) 3, 1, 5, 4, 2.
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A) Label A
B) Label B
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E) Label E
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