1. The Five Golden Rules of Skeletal Muscle Activity
With a few exceptions, all muscles cross at least one joint
Typically, the bulk of the muscle lies proximal to the joint crossed
All muscles have at least two attachments: the origin and the insertion
Muscles can only pull; they never push
During contraction, the muscle insertion moves toward the origin

2. Origin verses Insertion
Origin – place of attachment on the bone that is considered to be immovable or less movable
Insertion – place of attachment on the movable bone
Remember, the insertion moves toward the origin during contraction

3. Muscle Interactions
Prime Mover – the muscle that has the major responsibility for causing a particular movement
Antagonists – the muscles that oppose or reverse a movement
Synergists – help the prime movement by producing the same movement or by reducing undesirable movements
Fixators – specialized synergists that hold a bone still or stabilize the origin of the prime mover so all the tension is used for the movement

4. Use pages 193-196 to define the following words
Flexion
Extension
Rotation
Abduction
Adduction
Circumduction
Dorsiflexion
Plantar flexion
Inversion
Eversion
Supination
Pronation
Opposition

5. Exercise Video
Now that you have defined these different movements, I now want you to make a video demonstrating these movements.
It can be a serious exercise video or a spoof, but it must include all of the movements.
You should also film the video in one shot, so that no editing is required.