Capillaries are so small that you can’t see
them without a microscope, so for the most you
wouldn’t see them anyways! Since capillaries are
filled with blood, they are either deep red if
they don’t have any oxygen or bright red if they
do have oxygen. Capillaries are the main way
that all the cells in your body get food and
There are about 10 billion capillaries in a
human body. Since there are so many
capillaries, every cell in the body is at most 2
or 3 cells away from a capillary.
Click Here to return to the search form.