"12628368" . "Periosteum (from Greek \u03C0\u03B5\u03C1\u03AF (peri 'around') and \u1F40\u03C3\u03C4\u03BF\u1FE6\u03BD(ostoun 'bone')) is a membrane that covers the outer surface of all bones, except at the joints of long bones. Endosteum lines the inner surface of all bones."@en . "p_13" . . "Periosteum"@en . .