It includes basic information on how the skeletal system works.

1. HOW DOES
THE
SKELETAL
SYSTEM

2. Skeletal system - consists
of bones that differ in size,
shape, and function.
It gives the shape and
support to your body and
protects some delicate
body organs.

3. Two main groups
Axial skeleton
Is composed of
bones that
protect some
delicate organs
of the body.
Appendicular skeleton
Is consists of
bones that
provide support
and together
with muscle,
make movement
possible.

4. Axial skeleton
Consists of skull,
backbone,
breastbone, and
ribs.

5. skull
• My look like one big bone, but
actually it is composed of 29
bones.
• Eight of these bones form a
helmetlike case called cranium
that protects the brain.

6. skull

8. Backbone/spine
• It is attached to the base of the
skull.
• It consists of 26 irregularly-
shaped bones called
vertebrae.
• The ringlike vertebrae together
form a hollow tube that

11. Breastbone/sternum
• The long and narrow
breastbone is found at
the middle of the chest.
•It is attached to the
cagelike flat, curved
bones called ribs.

13. ribs
• These are 12 pairs of ribs, 10
pairs are attached to the
breastbone while two pairs are
not.
• These two unattached pairs
are called floating ribs.
• The breastbone and the ribs
encloses the heart and lungs.

15. Appendicular skeleton
•Consists of the
collar bones,
shoulder bones and
bones of the arms,
hips, and legs.

16. Collar bones/clavicle

17. Shoulder blades/scapulae
•The collar bones
are attached to the
shoulder blades.

19. Each arm is
composed of three
bones, one bigger in
the upper arm and
two smaller bones in
the lower arm.

20. Humerus – is the upper arm
bone.

21. Radius and ulna

22. Each hand has
a total of 27
bones from the
wrist, palm,
and fingers.

23. Hip bone

24. pelvis
•Attached to the
backbone and joined
together by cartilages at
the front, the hip bones
form a ring called pelvis.

25. Femur – longest bone in the
body.

26. Tibia and fibula

27. Patella/knee cap