I suggest you to provide some options, as it's quite difficult to answer your question. Here is your answer: A long bone is covered externally with a sheath called the
periosteum, whereas the marrow cavity is lined with the <span>
endosteum</span>
. I've attached the illustration to make it clear for you
Science relies on hypothesis, experimentation, data collection, data analysis, drawing conclusions from data, sharing of data, changing conclusions based on new data, etc.
Answer:
pelvic region is the answer