Questions: Place the steps of intramembranous ossification in the correct order starting with the earliest.

Place the steps of intramembranous ossification in the correct order starting with the earliest.
Transcript text: Place the steps of intramembranous ossification in the correct order starting with the earliest.
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Solution

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Solution Steps

Step 1: Mesenchymal cells cluster and differentiate into osteogenic cells

Mesenchymal cells cluster together and differentiate into osteogenic cells, which then become osteoblasts. This forms the primary ossification center.

Step 2: Osteoblasts secrete organic matrix

Osteoblasts secrete the organic matrix, which then calcifies. Trapped osteoblasts become osteocytes.

Step 3: Formation of trabeculae

The calcified matrix forms trabeculae, creating spongy bone. Blood vessels grow into the spaces between the trabeculae.

Final Answer

  1. Mesenchymal cells cluster and differentiate into osteogenic cells.
  2. Osteoblasts secrete organic matrix.
  3. Formation of trabeculae.
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