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Bones - Coggle Diagram
Bones
What bones are made of
The third layer
spongy, but hard
the middle of the bone
marrow
make blood cells
The second layer
hard and smooth
when you fracture
start to connect the bone together
soft at first
The bone heals
become hard
The first layer
has nerves and blood vessels
help bones grow
What
form a skeleton
protects important parts
works with muscles
to help you move