What Are They For?
Bones are used for movement, support,
and protecting the organs in your
body. They store minerals and
produce red and white blood cells.
Circulatory System-the bone marrow
produces red blood cells, white blood
cells, and platelets, which are part of the
Muscular System-this system is made of
muscles that are attached to your bones
by tendons to help you move, and to give
you more structure. Your skeletal muscles
are the voluntary muscles attached to
Immune System-Bones produce white blood
cells, which are the main part of the
immune system. They are used to fight
off things that don’t belong in the body.
Joints are the part of the system in
which bones meet each other. They
are essential for movement. The
bones in joints are usually connected
by ligaments. There are around 230
moveable and partially moveable
joints in your body, as well as some
Bone marrow is found in every hollow
bone. There are two types of
marrow-red and yellow. The red
bone marrow produces platelets,
red blood cells, and white blood
cells. Some white blood cells are
formed in yellow bone marrow, along
with fat, cartilage, and bone cells.
Bones are made of two types of
tissues; compact bone tissue and
spongy bone tissue. The four kinds
of bones are long bones, short
bones, flat bones, and irregular
bones. Bones are used to protect
organs in the body, and to give
structure to the body.
How Are They Made?
When you are a baby, some of
your bones weren’t all bone,
but also part cartilage. With
the help of calcium, that
cartilage turns into bone as
How Did Bones Evolve?
Early soft bodied animals had
cartilage. Just like how bones are
formed out of cartilage in our
bodies, the same thing happened to
them. The cartilage eventually
turned into bone, and now they have