The strength and rigidity of the bone is a result of the inorganic salts deposited in the matrix. Matrix is basically just large amount of non-cellular materials, which is what your bones are made of.
Bone cells take calcium from the blood in order to keep bones hard and strong. Calcium is a key mineral necessary for bone formation and maintenance.
Compact bone.
It contains calcium which is a substance that does not weight. Therefore it makes bones be strong and hard. If you took the calcium, the bones would be flexible and not hard at all.
Osteonic canals contain blood vessels that connect to the long axis of the bone. The blood vessels that are connected perforate the canals of the bone and provide vessels to the surface of the bone which makes the bone hard.
calcium phosphate
Bone cells take calcium and phosphorus from the blood to keep the bone hard and strong. These minerals are essential for bone mineralization and strength.
Calcium.
Calcium
Nothing(ㅋㅋㅋ)
Calcium makes them hard.
its a wierd thing and the brain is full of blood so makes the nerves become hard because dried up blood makes nerves and when something touches the nerves the dried blood scraped against a bone or another organ which makes it hurt !!
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