Bone Remodeling Flashcards
bone remodeling
ongoing replacement of old bone tissue by new bone tissue
calcium
mineral needed to form the extracellular matrix in bone; found in dairy products, beans, seeds & leafy greens
bone remodeling before age 25
stage in life in which osteoblast activity & bone formation is more prevalent than osteoclast activity & bone resorption
bone remodeling after age 50
stage in life in which osteoclast activity & bone resorption is more prevalent than osteoblast activity & bone formation
osteoblast
bone forming cells
osteoclast
Bone-destroying cells
factors that increase osteoblast activity/decrease osteoclast activity
gravity; exercise; excess calcium in the blood
factors that increase osteoclast activity/decrease osteoblast activity
zero gravity; immobility; loss of calcium in the blood