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Bones - Coggle Diagram
Bones
what bones made of?
the first layer
nerve & blood vessels
help bones grow
the second layer
hard & smooth
the third layer
spongy & hard
the middle of the bone
marrow
make blood cells
when you fracture
start to connect the bone
soft at first
after it heals
becomes hard
What?
form a skeleton
work with muscles
help you move
protect important parts