Final answer:
Osteocytes are bone cells located inside lacunae, which are spaces found at the borders of adjacent lamellae. They are responsible for the transportation of nutrients to the osteocytes and removal of waste. In spongy bone, the osteocytes are housed in lacunae arranged in a lattice-like network of matrix spikes called trabeculae.
Step-by-step explanation:
Osteocytes are bone cells that are located inside spaces called lacunae. The lacunae are found at the borders of adjacent lamellae. Canaliculi connect with the canaliculi of other lacunae and eventually with the central canal, allowing nutrients to be transported to the osteocytes and wastes to be removed from them. In spongy bone, the osteocytes are housed in lacunae as well, but they are arranged in a lattice-like network of matrix spikes called trabeculae. The spaces in the trabeculated network provide balance to the dense and heavy compact bone, making bones lighter so that muscles can move them more easily.