Between the bones there is like a cartilage bubble, inside the bubble is a fluid, this fluid is called Nucleous Pulposus.
This acts like a shock absorber for things to do on the day to day such as bending or even walking. This stuff NEEDS to be there otherwise you would have bone rubbing on bone. People with ruptured discs have a hard time bending or walking cause that cushioning effect isn’t there.
It also surrounds the spinal cord which is vital to control all your body.
As they aren’t made of bone they decay when we die so that’s why we only find bones
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