Which bone type forms the inner porous region of a typical bone?

Which bone type forms the inner porous region of a typical bone?

• A. Spongy
• B. Compact
• C. Cortical
• D. Trabecular

Answer: (A)

The inner porous region of a typical bone is spongy bone, also called trabecular bone. Its lattice of thin trabeculae creates a light yet strong framework that reduces weight and often houses bone marrow in the spaces. In contrast, the outer layer is dense bone, known as compact or cortical bone, which provides most of the bone’s strength. So spongy (trabecular) bone is the correct description for the inner porous region.

The inner porous region of a typical bone is spongy bone, also called trabecular bone. Its lattice of thin trabeculae creates a light yet strong framework that reduces weight and often houses bone marrow in the spaces. In contrast, the outer layer is dense bone, known as compact or cortical bone, which provides most of the bone’s strength. So spongy (trabecular) bone is the correct description for the inner porous region.