Intrauterine life
In the second month of intrauterine life, the primary points (centres) appear first, which give rise to the main parts of bones experiencing the greatest load, i.e. the shafts, or diaphyses of tubular bones (Gk dia between, phyein to grow; the part of the bone growing between the epiphyses) and the ends of diaphyses, the metaphyses (Gk meta after, beyond). They ossify by perichondral and enchondral osteogenesis. After that, shortly before birth or in the first years after birth, the secondary points appear from which the articulating ends of the tubular bones Medical Coding Training will help in the medical coding.
