What is produced by secondary ossification centers?

Secondary ossification centers are responsible for the formation of bone in specific areas of the developing skeleton, particularly in the epiphyses of long bones. They produce spongy bone and contribute to the growth and shaping of bones after the primary ossification centers have formed. This process is crucial for the development of joint surfaces and the overall structure of the mature skeleton. Secondary ossification centers also play a role in the eventual cessation of bone growth as they contribute to the closure of growth plates.