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Bones - Coggle Diagram
Bones
What bones are made of
made of
different layers
1st layer
has nerves & blood vessels
help bones grow
3rd layer
spongy but still hard
2nd layer
hard & smooth
the middle
marrow
make blood cells
when you fracture
start to connect the bone together
soft at first
bone heals
becomes hard
What?
come together
form a skeleton
protect important parts of body
work with muscles
help you move