Which Statement About Bone Is True

Multiple Choice

Which statement about bone is true?

A) Astronauts who spend long periods of time in zero gravity experience decalcification of their bones.
B) Osteoclasts are derived from the lineage of cells that produce osteocytes.
C) Most bones are made entirely of compact bone.
D) Once bones have finished growing, they remain the same shape and density until old age, when thinning of the matrix can occur.
E) Osteoclasts lay down bone in layers, creating compact bone.