Muscle Movement
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Transcript Muscle Movement
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
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
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
Flexion
Extension
Rotation
Abduction
Adduction
Circumduction
Dorsiflexion
Plantar flexion
Inversion
Eversion
Supination
Pronation
Opposition
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.