Human Body Systems Unit
Catalyst
1.
What is the job of the frame/walls
of a building?
2.
Why do you think we have bones?
3.
What do you think would happen if
we didn’t have bones?


When a baby is born, not all of the bones in their skull have
fused together so they have soft spots on their head called
fontanel
Adults have 206 bones in their body

The framework of
bones and other
tissues that
supports the body
Tissue
Description
Compact Bone
The hard, dense outer layer of
bone
Spongy Bone
Hard, but has many “holes” in it
Marrow
Soft tissue with the spongy
bone, makes blood cells

Axial skeleton – consists of
80 bones in the head and
trunk of the human body

Appendicular skeleton –
composed of 126 bones
that make up the
appendages, or the parts
that are joined to
something larger, of the
human body

Axial skeleton – consists
of 80 bones in the head
and trunk of the human
body

Appendicular skeleton –
composed of 126 bones
that make up the
appendages, or the parts
that are joined to
something larger, of the
human body

Shape and Support

Movement

Protection

Production

Storage

Skeleton determines
shape of your body just
like the frame
determines the shape of
a building

Bones form joints,
which is a place
where two bones
come together

Joints allow bones to
move in different
ways

Skull protects your brain

Rib cage protects heart, lungs, and other
organs in the center of your body

Bones produce
(make) blood cells
 The long bones in
your arms and legs
can be thought of as
factories that make
certain blood cells

Bones store minerals until body needs them
 These minerals include calcium and phosphorus,
which are in many foods we eat