endosteum
En*dos"te*um, n. Etym: [NL., fr. Gr. (Anat.) Defn: The layer of vascular connective tissue lining the medullary cavities of bone.
En*dos"te*um, n. Etym: [NL., fr. Gr. (Anat.) Defn: The layer of vascular connective tissue lining the medullary cavities of bone.