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What is a broken bone (fracture)?
Bones make up the skeleton of the body. They allow us the ability to interact
with our environment and lift out body up against gravity. Bones are attachment
points for muscles which allows us to run, jump, sit, kneel, grasp, and
lift. Bones also protect organs from potential damage, and the bone marrow (tissue inside of bones) is responsible for blood cell production.
Bones are the body's storage area for calcium. On a cellular level, calcium
is always entering and exiting bone under the influence of the body's hormones.
Parathyroid hormone increases calcium levels in the bloodstream, meaning, that it
regulates it's release by bone and decreasing bone density. Calcitonin decreases
blood calcium levels and helps restore calcium to bone. Calcium is needed in the
blood stream to help muscle cells including the heart to function. Hormone
levels will sacrifice calcium in bone to maintain blood calcium levels in a
normal range. For that reason,
calcium and Vitamin D are important to maintain
calcium stores in the body.