In cancellous bone, the porous lattice is formed by which structures?

In cancellous bone, the porous lattice is formed by which structures?

• A. Lacunae
• B. Trabeculae
• C. Canaliculi
• D. Lamellae

Answer: (B)

The porous lattice in cancellous bone is formed by trabeculae—thin, rod- or plate-like strands of bone that weave into a lattice. This network creates the many small spaces that house marrow and enable nutrient exchange while keeping the structure light yet strong. Inside each trabecula, bone tissue includes lamellae with osteocytes in lacunae connected by canaliculi, but these smaller features are components of the trabeculae, not the lattice itself. Lacunae, canaliculi, and lamellae exist within the trabeculae rather than forming the overarching porous framework.

The porous lattice in cancellous bone is formed by trabeculae—thin, rod- or plate-like strands of bone that weave into a lattice. This network creates the many small spaces that house marrow and enable nutrient exchange while keeping the structure light yet strong. Inside each trabecula, bone tissue includes lamellae with osteocytes in lacunae connected by canaliculi, but these smaller features are components of the trabeculae, not the lattice itself. Lacunae, canaliculi, and lamellae exist within the trabeculae rather than forming the overarching porous framework.