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what are the functions of bones?
support, movement, and protection, red blood cell formations, stores fat and marrow, also stores inorganic salts
parathyroid
low blood cacium= osteoclast activity
calcitonin
high blood calcium= osteoblast
what are the 4 bone shapes?
long bones, sesamoid bones, flat bones, irregular bone
compact (cortical) bone
no space,, repeated osteons (external of all bone)
spong (cancellous) bone
red marrow lives in spaces of spongy bome, spaces change to accomondate pressure
epiphysis
at the ends of long bone. outer surface id hyaline cartilage
dia