title: Physiology of bone: mechanisms of osteopenic disorders.
mesh_terms: D000328:Adult; D000375:Aging; D001847:Bone Diseases / Q000209:etiology / Q000503:physiopathology; D001862:Bone Resorption; D001842:Bone and Bones / Q000033:anatomy & histology / Q000502:physiology*; D002118:Calcium / Q000502:physiology; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000150:complications / Q000503:physiopathology; D008297:Male; D008593:Menopause
chemical_list: D002118:Calcium