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The provide the structure that muscles and tissues are attached to
We need bones for support, movement and structure :)
to provide structure to plant cells, like how bones provide our bodies with structure
Bones do not have any meaning, but they provide the supporting structure for vertebrates.
Many bones have spaces for blood vessels to run in their main structure as well as a cavity inside them called a marrow cavity. Part of the formation of the marrow cavity is made of spongy bone which is very light weight.This makes them more light weight but still strong.
Long bones.
Bones
If the concept of bones had not evolved we would have been more like squids or octopi. These are boneless animals which use hydraulics to provide the support we attain by using bonesAlternately we could have followed another option. insects are another group of animals without bones, they have an exoskeleton of chitin which serves many of the same purposes as bone.
Not all animals have the same skeletal structure. Whales have bones in their "flippers" that resemble the same bones that make up the human "arm". This is called a homologous structure.
structure, support, and movement
they keep it up and give it structure and support
they give the body support