the.com/periosteum
the bone's living wrapper, where new skeleton gets manufactured and broken ones learn to heal
feels painrichly innervated, source of brutal deep-bone aches
heals youits cells build fresh bone after fractures
two layerstough outer fibers, busy inner cell factory
anchors tendonsSharpey's fibers stitch muscle right into bone
thins with ageolder periosteum makes bones slower to mend