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Flagpole Analogy
- Flag = Muscle
- Pole = Tendon
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Multipennate muscle Found in?
Deltoids
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Conbergent Muscle
- Start fanned out and converge
- Big to small
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Insertion
- Where the muscle ends
- Where the muscle acts
Ex. Action end of muscle
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Action (3 types)
- Prime movers (agonists)
- Synergists
- Antagonists
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Prime movers (agonists)
Mainly responsible for producing a particular movement.
Ex. Flexing, and extending arm.
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Synergist
- Aide to agonists
- Provide additional pull near the insertion or stabilizing point.
- Typically most useful at ther beginning of a movement.
- Ex. Helpers to muscle
- Most useful at the beginning of muscle contraction
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Antagonist
- Movement oppose the agonist.
- Ex. Triceps (antagonists) to biceps (agonist)
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3 levers
- Resistance- Garvity
- Fulcrum- Fixed point, resting point
- Applied force- Opposite of resistance
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Elevation/ Deppression
- Mandible
- Eevation = close
- Deppression = Close
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FLexion/ Extension/ Hyperextension
Forearm
- Flexion = Flex guns
- Extension = Extend arm
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Flexion/ extension/ Hypertension
Neck
- Flexion = Down
- Extension = Normal
- Hypertension = Backwards
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Dorsiflexion/ Plantarflexion
Foot
- Dorsiflexion = Lift foot up at ankle
- Plantarflexion = Foot flat on ground
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Protraction/ Retraction
Shoulders/ Mandible
- Protraction = Forward
- Retraction = Pull back
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Inversion/ Eversion
Foot at ankle
- Inversion = Inwards
- Everion = Foot outwards
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Opposition/ Reposition
Hand at thumb
- Opposaition = Thumb forlded in
- Reposition = Thumb extended outwards
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Rotation/ Circumduction
Arm/ leg
- Rotation = Head left, center, right
- Medial ROtation = Toes pointed towards middle
- Lateral Rotation = Toes pointed outwards
- Circumduction = Arm going in full circle
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Abduction/ Adduction
Arms
- Abduction = Arms extended outwards / Straight
- Adduction = Arms at rest / Down
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