Rickets (Inorganic) {Ans: Calcium deficiency due to lack of vitamin D leads to flexible bones (bowed legs)}Parathyroid Hormone Target Tissues {Ans: Bone, kidney, intestines}Incomplete fracture {Ans: Bone is only partially broken}Compact Bone Location {Ans: External layer of all bones; Diaphysis of long bones}Why is bone considered an organ? {Ans: It contains osseous (connective) tissue, blood vessels, nerves, lymphatic vessels, cartilage, and connective tissue coverings}Kinesiology {Ans: The study of body motion}Appositional Growth {Ans: Growth at outer surface; growth in width}Calcitonin Target Tissues {Ans: Bone, kidney, intestines}Calcitonin Actions {Ans: Inhibits osteoclast activity; increases excretion of calcium at kidney; inhibits intestinal absorption of calcium}Simple (closed) {Ans: Complete, displaced fracture in which neither broken piece of bone breaks the skin}Articulations {Ans: Contact point between bone & bone, bone & cartilage, or bone & teeth}Acromegaly {Ans: Hyper secretion of growth hormone after puberty (epiphyseal plates of long bones already closed)}Scurvy (Organic) {Ans: Vitamin C deficiency impairs collagen synthesis and leads to brittle bones}Collagen {Ans: Provides flexibility & resistance to tension}Spongy Bone Location {Ans: Epiphyses of long bones; surrounding marrow cavities; flat, short, irregular bones}Fracture {Ans: Broken bone; a break