Which bones are plate-shaped and located in the skull?

Which bones are plate-shaped and located in the skull?

• A. Flat bones
• B. Long bones
• C. Irregular bones
• D. Sesamoid bones

Answer: (A)

Flat bones are plate-shaped, thin, and broad, which matches the skull bones that form much of the cranial vault and facial structure. In the skull these bones protect the brain and provide large surfaces for muscle attachment. They usually consist of two layers of compact bone with a layer of spongy bone between them (the diploë) and develop mainly through intramembranous ossification. The other shapes don’t fit the plate-like description: long bones are elongated, irregular bones have complex shapes, and sesamoid bones are small bones embedded within tendons.

Flat bones are plate-shaped, thin, and broad, which matches the skull bones that form much of the cranial vault and facial structure. In the skull these bones protect the brain and provide large surfaces for muscle attachment. They usually consist of two layers of compact bone with a layer of spongy bone between them (the diploë) and develop mainly through intramembranous ossification. The other shapes don’t fit the plate-like description: long bones are elongated, irregular bones have complex shapes, and sesamoid bones are small bones embedded within tendons.