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Muscle Anatomy
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Muscle Anatomy Terminology
Fascia – thin connective tissue – provides support for muscle Tendon – connects muscle to bone (ropelike) Aponeuroses – connects muscle to bone or muscle to another muscle (thin, wide, flat)
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Flexion – decreasing the angle b/w two body parts
Extension – increasing the angle b/w two body parts Plantarflexion – Pointing the toes downward Dorsiflexion – Pointing the toes upward
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Abduction – Movement away from the midline of the body (Abduct = take away, kidnap)
Adduction – Movement toward the midline of the body (adding to the body) Pronation – rotation (of the arms) inward Supination – rotation (of the arms) outward
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Inversion – Pointing the soles of the feet inward (m/c position for ankle sprains)
Eversion – Pointing the soles of the feet outward Protraction – sticking out Retraction – Bringing it back in
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Elevation – Lifting up Depression – Movement downward
Circumduction – Rotating so the distal end of the bone forms a circle Rotation – Movement around a central axis
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Muscle info • Prime Mover – muscle that performs the majority of the work for a certain action • Synergists – muscles that assist the prime mover • Antagonist – muscles that perform the opposite action as another group of muscles
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Muscle – the muscle’s name
• Origin – the non-moving point of attachment • Insertion – the moving point of attachment • Action – what the muscle does How Muscles Are Named • Shape – Rhomboid, Deltoid, Teres Major • Location – SCM, Frontalis • Action – Levator Scapula, Supinator • More than one – Biceps Brachii, Serratus Anterior
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