help! I have an exam tomorrow. I am positive that the ones ready filled in are c

Question

help! I have an exam tomorrow. I am positive that the ones ready filled in are correct because those are the only ones friend got correct.

Put the following events of ossification in order Osteoblasts produce trabeculae at the primary ossification center. not Chondroblasts hypertrophy and die with the matric becoming calcified. ho -Mesenchyme condenses into a model for the future bone. The model grows as chondroblasts divide A bony collar forms in the mid-diaphyseal aren. 2 I -Osteoclasts break down the calcified cartilage model. ho+ 9 The primary ossification center enlarges with early trabeculae removed to form the medullary cavity. rot 5 Blood vessels invade the model to bring bone cells and marrow to the model interior. ot 8

Explanation / Answer

The events of ossification in correct order are -

1 - Mesenchymal cells condense to become models for future bone.

2 - Blood vessels invade the model to bring bone cells and marrow to the model interior.

3 - Mesenchymal cells differentiate into chondroblasts.

4 - The model grows as chondroblasts divide.

5 - Chondroblasts hypertrophy and die with the matric becoming calcified.

6 - A bony collar forms in the mid - diaphyseal area.

7 - Osteoblasts break down the calcified cartilage model.

8 - Osteoblasts produce trabeculae at primary ossification center.

9 - The primary ossification center enlarges with early trabeculae removed to form the medullary cavity.

      

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