Cells called chondroblasts lay down a "soft" version of the skeleton.
While most bones use a cartilage template, the flat bones of your skull form directly from membranes to ensure your brain has immediate protection. Wiring the Muscles (Myogenesis) development of the musculoskeletal system
Growth continues through adolescence at the (growth plates). Under the influence of growth hormones and sex hormones (estrogen and testosterone), these plates eventually "close" or ossify completely, typically by the early twenties, signaling the end of physical height gains. Conclusion Cells called chondroblasts lay down a "soft" version