Which bone tissue forms the dense interior of long bones and contains a lattice of trabeculae within marrow spaces?

Which bone tissue forms the dense interior of long bones and contains a lattice of trabeculae within marrow spaces?

• A. Compact bone
• B. Spongy bone
• C. Dense regular bone
• D. Cartilage

Answer: (B)

Spongy bone, also called cancellous bone, forms the porous interior of long bones. It’s made up of a network of trabeculae that create a lattice with spaces filled by bone marrow. This arrangement lightens the bone while still providing strength, and it also provides space for marrow within the interior. The dense exterior of long bones is compact bone, not this lattice-filled interior, and cartilage is a different tissue entirely. So the description fits spongy bone.

Spongy bone, also called cancellous bone, forms the porous interior of long bones. It’s made up of a network of trabeculae that create a lattice with spaces filled by bone marrow. This arrangement lightens the bone while still providing strength, and it also provides space for marrow within the interior. The dense exterior of long bones is compact bone, not this lattice-filled interior, and cartilage is a different tissue entirely. So the description fits spongy bone.