Page 102 - (DK) I Can’t Believe It! 2
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How heavy are
your bones?
Bones are actually very
light—your skeleton The hyoid bone
in the throat is
accounts for only about bones that isn’t
one of the few
15 percent of your joined to another.
total weight.
INSIDE A BONE
An adult
human weighs
more than
six times the
weight of its
skeleton.
Although very strong, bones are
light because they are not solid.
Inside the hard, dense “compact
bone” is “spongy bone,” which
looks like honeycomb (shown
here in this false-colored image). Your feet and
The spaces in the bone are filled hands contain
with jellylike marrow. more than half
of your body’s
bones—27 in
each foot and 26
in each hand.
US_100_101_309600_ICBT_Bones_big_small.indd 100 19/12/17 12:57 pm
