Lacunae

Lacunae are small empty spaces or cavities within biological tissues, such as bone or cartilage. In bones, lacunae are tiny pits that house osteocytes, the cells responsible for maintaining bone tissue. These spaces allow cells to reside close to the bone matrix, facilitating communication and nutrient exchange. In cartilage, lacunae contain chondrocytes, which are responsible for producing and maintaining the cartilage matrix. Overall, lacunae serve as protective and functional compartments that support the health and maintenance of specialized cells within various connective tissues.