1. Pg 64 of IAN
The Skeletal System

2. There are around 206 in the adult human
Work on your own for 7-8 minutes to fill in what you know.
There are around in the adult human
body. These bones plus the connecting tissue
make up the system.
bones
skeletal
The skeletal system is very important for many
reasons. Some bones help our organs. The
, for example, protects our brains and the
, protects our lungs.
protect
cranium
ribcage

3. The skeletal system also gives us our
Without a , we would be shapeless blobs
like a or an earthworm. Our bones, which
are connected by , provide a frame
for the rest of the organs, giving us our unique
body shape.
shape.
skeleton
jellyfish
ligaments
The skeletal system also helps us Muscles,
which are attached to bones by , cause
the bones to move, which makes our bodies move.
move.
tendons

4. Bones also help your body store such as
calcium. If there is too much calcium in the blood,
some of it becomes bone. If there is not enough
calcium, then the bones give some to the blood.
minerals
Finally, another important function of bones is to
produce Inside bones there is a soft
substance called , which is used to make
blood cells.
blood.
marrow

5. Use pg. 519 of your text book to help you
begin labeling the bones of the human skeleton.
We will go over this and leave blank any you are
not sure about.

6. Page 63 of IAN 1.cranium (skull) 3. clavicle (collar 2. mandible (jaw)
bone)
2. mandible (jaw)
Sternum ( breast
bone)
4. scapula (shoulder blade)
6. ribs
8. vertebral column
(backbone)
7. humerus
11. pelvic girdle
(pelvis)
9. radius (goes to thumb)
10. ulna (goes to pinky)
12. femur (thigh bone)
tibia (inside,
bigger)
14. fibula (outside,
smaller)