Actually, babies have more cartilage than bone. A new born
baby’s skeleton is made up 300-350 parts. As the baby develops, some of his or her bones
combine to form larger, stronger bones. Adults consequently contain only 206
bones.
The bones in the baby are not fused at first because
the baby is able to pass through the birth canal more easily.This is why the babies have
fontanelles, or soft spots, in their skulls. But as the baby grows, the bones need to
fuse to become stronger in order to protect the brain and other organs. The scientific
term for this procedure is “intramembranous ossification” in which the calcium salts
replace the connective tissues to form actual bones.
The
most important function of the bones is to hold all muscles and organs together,
maintaining a firm structure. Other than physical support, the bone marrows synthesize
the blood and function as an important storage for minerals like calcium and phosphorus.
Bones are made of living cells and collagen. The bone cells depend on blood to maintain
life since the blood brings them nutrition, oxygen and also carries out the waste. The
collagen in the bones helps bones to grow and repair themselves. When a tissue or bone
breaks, the bone cells become active and multiply themselves to repair the
injury.
I hope it helped!
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