Which bone forms by intramembranous ossification?Multiple ChoiceRadiusAxisHamateZygomatic

Step 1: Break Down the Problem

To answer the question, we need to identify which of the given bones forms through the process of intramembranous ossification. The options are:

1. Radius
2. Axis
3. Hamate
4. Zygomatic

Step 2: Relevant Concepts

Intramembranous ossification is a process by which bone forms directly from mesenchymal tissue. It primarily occurs in flat bones, like the bones of the skull and some facial bones.

Step 3: Analysis and Detail

• Radius: This bone is a long bone and forms through endochondral ossification.
• Axis: This is another long bone, specifically the second cervical vertebra, also formed through endochondral ossification.
• Hamate: This is one of the carpal bones, which typically forms through endochondral ossification as well.
• Zygomatic: This bone (the cheekbone) is flat and forms by intramembranous ossification.

Step 4: Verify and Summarize

After analyzing the options, the only bone that forms through intramembranous ossification among the provided choices is the zygomatic bone.

Final Answer

Zygomatic is the bone that forms by intramembranous ossification.