Why water is important to the bones?

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skull encases the brain and creates the shape of a person's face.

The backbone protects the spinal cord, which is the route for

messages transmitted between the brain and the body. The cage is

composed of ribs, and it protects vital organs, such as the heart,

lungs, liver and spleen. The pelvis is responsible for safeguarding

the bladder and intestines. In women, the pelvis also shelters the

reproductive organs.

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Bones start to develop while an individual is still in the mother's

womb. The skeleton is composed of flexible cartilage as it forms.

It undergoes the process of ossification in the following weeks,

wherein hard deposits of calcium phosphate and stretchy collagen,

which are the main parts of bones, replace the cartilage.

Ossification takes up to 20 years to complete.

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Children and young teenagers have smaller bones than adults. Their

bones consist of growth plates, which contain divisions of

cartilage cells that multiply, grow longer and turn into sturdy,

mineralized bone. The growth plates of girls typically develop into

hard bone earlier than boys. Bones continuously change as the body

creates new bone and breaks down old bone. A person's bone mass

constantly increases until the age of 30.