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Muscle Actions

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Action
Muscles
TMJ Depression   Lateral pterygoid, suprahyoid, infrahyoid  
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TMJ Elevation   Temporalis, masseter, Medial pterygoid  
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TMJ Protrusion   Masseter, lateral pterygoid, medial pterygoid  
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TMJ Retrusion   Temporalis, Masseter, Digastric  
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TMJ Side to side   Medial pterygoid, Lateral pterygoid, Masseter, Temporalis  
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Cervical Flexion   SCM, Longus colli, Scalenes  
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Cervical Extension   Traps, Splenius cervicis, Semispinalis cervicis, Iliocostalis cervicis, Longissimus cervicis, Multifidus  
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Cervical Rotation and Lateral Bending   SCM, Scalenes, Splenius cervicis, Longissimus cervicis, Iliocostalis cervicis, Levator scapulae, Multifidus  
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Thoracic and Lumbar Flexion   Rectus abdominis, Internal oblique, External oblique  
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Thoracic and Lumbar Extension   Erector spinae, Quadratus lumborum, Multifidus  
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Thoracic and Lumbar Rotation and Lateral Bending   Psoas major, Quadratus lumborum, External oblique, Internal Oblique, Multifidus, Longissimus thoracis, Iliocostalis thoracis, Rotatores  
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Scapular Elevation   Upper traps, Levator scapulae  
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Scapular Depression   Lower traps, Lats, Pecs major and minor  
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Scapular Protraction   Serratus anterior, Pecs minor  
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Scapular Retraction   Rhomboids, Traps  
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Scapular Upward Rotation   Traps, Serratus anterior  
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Scapular Downward Rotation   Rhomboids, Levator scapulae, Pecs minor  
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Shoulder Flexion   Biceps brachii, Anterior delts, Coracobrachialis, Pecs major  
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Shoulder Extension   Lats, Posterior delts, Teres major  
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Shoulder Abduction   Middle delts, Supraspinatus  
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Shoulder Adduction   Pecs major, Lats, Teres major  
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Shoulder Lateral Rotation   Teres minor, Posterior delts, Infraspinatus  
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Shoulder Medial Rotation   Teres major, Pecs major, Subscapularis, Lats, Anterior delts  
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Elbow Flexion   Biceps brachii, Brachioradialis, Brachialis  
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Elbow Extension   Triceps, Anconeus  
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Radioulnar Supination   Supinator, Biceps brachii  
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Radioulnar Pronation   Pronator teres, Pronator quadratus  
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Wrist Flexion   Flexor carpi radialis, Flexor carpi ulnaris, Palmaris longus  
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Wrist Extension   Extensor carpi radialis longus and brevis, Extensor carpi ulnaris  
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Radial Deviation   Extensor carpi radialis, Flexor carpi radialis, Extensor pollicis longus and brevis  
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Ulnar Deviation   Flexor carpi ulnaris, Extensor carpi ulnaris  
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Hip Flexion   Iliopsoas, Sartorius, Rectus femoris, Pectineus  
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Hip Extension   Gluteus maximus, Biceps femoris, Semitendinosus, Semimembranosus  
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Hip Abduction   TFL, Gluteus medius, Gluteus minimus, Piriformis, Obturator internus  
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Hip Adduction   Gracilis, Adductor longus, Adductor brevis, Adductor magnus  
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Hip Medial Rotation   TFL, Gluteus medius, Gluteus minimus, Pectineus, Adductor longus  
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Hip Lateral Rotation   Gluteus maximus, Obturator externus, Obturator internus, Piriformis, Gemelli, Sartorius  
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Knee Flexion   Biceps fermoris, Semitendinosus, Semimembranosus, Sartorius  
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Knee Extension   Rectus femoris, Vastus lateralis, Vastus medialis, Vastus intermedius  
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Plantar Flexion   Gastrocnemius, Soleus, Tibialis posterior, Peroneus longus, Peroneus brevis, Plantaris, Flexor hallucis  
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Dorsiflexion   Tibialis anterior, Extensor hallucis longus, Extensor digitorum longus, Peroneus tertius  
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Ankle Inversion   Tibialis anterior, Tibialis posterior, Flexor digitorum longus  
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Ankle Eversion   Peroneus longus, Peroneus brevis, Peroneus tertius  
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