Lacuna (histology)

Lacuna
Section parallel to the surface from the body of the femur. X 100. a, Haversian canals; b, lacunae seen from the side; c, others seen from the surface in lamella, which are cut horizontally.
Nucleated bone cells and their processes, contained in the bone lacunae and their canaliculi respectively. From a section through the vertebra of an adult mouse.
Anatomical terminology

In histology, a lacuna is a small space, containing an osteocyte in bone, or chondrocyte in cartilage.