OBJECTIVES •Discuss the five functions of the skeletal system.

advertisement
OBJECTIVES
•Discuss the five
functions of the skeletal
system.
•Describe the structure
of a bone.
206 bones make up
the skeleton.
The Skeletal System is the
body’s living framework.
Most of the skeletal
system is make up
of bones, ligaments,
tendons, and
cartilage.
FUNCTIONS OF THE SKELETAL
SYSTEM
•Provides shape and support
•Allows movement
•Protects vital organs and
tissues
•Stores certain materials
•Produces blood cells
Axial Skeleton
Appendicular
Skeleton
skull
ribs
shoulders
breastbone
arms
vertebral column
and
hands
pelvis/hips
legs
and
feet
Axial Skeleton
http://www.shockfamily.net/skeleton/RIBS.MOV
Appendicular Skeleton
Development of Bone
Structure of Long Bone
Figure 6.3a, c
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Structure of Long Bone
Figure 6.3a,b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Microscopic Structure of Bone: Compact Bone
Figure 6.5a, b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Ball and Socket
A ball and socket joint allows for radial movement in almost any
direction. They are found in the hips and shoulders.
Hinge
A hinge joint allows extension and retraction of an appendage.
Pivot
Pivot joints allow rotation around an axis. The neck and forearms have
pivot joints. In the neck the occipital bone spins over the top of the axis.
In the forearms the radius and ulna twist around each other.
The
Skeletal
System is
the body’s
living
framework.
206 bones make up
the skeleton.
Download