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Bones - Coggle Diagram
Bones
what are bones made of?
layers
1st layer
all the nerves and blood vessels
help bones grow
2nd layer
hard and smooth
3rd layer
spongy but still hard
middle
marrow
makes blood cells
fracture
heal
connect the pieces together
becomes hard
what is a bone?
bones
help protect important parts
form a skeleton
work with muscle
to help move
support bodies