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THE MUSCULAR SYSTEM

THE MUSCULAR SYSTEM. 1. How do skeletal muscles produce movement? 2. Group movements 3. Review of superficial skeletal muscles – anterior 4. Review of superficial skeletal muscles - posterior. HOW DO SKELETAL MUSCLES PRODUCE MOVEMENT?. Exert force on tendons Tendons cross joint(s)

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THE MUSCULAR SYSTEM

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  1. THE MUSCULAR SYSTEM 1. How do skeletal muscles produce movement? 2. Group movements 3. Review of superficial skeletal muscles – anterior 4. Review of superficial skeletal muscles - posterior

  2. HOW DO SKELETAL MUSCLES PRODUCE MOVEMENT? Exert force on tendons Tendons cross joint(s) Joints act as the fulcrum of a lever system Origin versus insertion Gaster (belly) coracoid process bellies of biceps brachii origins (heads) of biceps brachii radius insertion of biceps brachii

  3. GROUP MOVEMENTS Prime mover (agonist) Antagonist Synergist(s) Fixator(s) FLEXORS biceps brachii brachialis EXTENSORS triceps brachii

  4. REVIEW OF SUPERFICIAL SKELETAL MUSCLES temporalis masseter sternocleidomastoid deltoid pectoralis major Serratus anterior triceps brachii biceps brachii external abdominal oblique rectus abdominis gluteus medius sartorius rectus femoris gracilis vastus lateralis vastus medialis gastrocnemius tibialis anterior

  5. REVIEW OF SUPERFICIAL SKELETAL MUSCLES masseter trapezius deltoid triceps brachii latissimus dorsi external abdominal oblique gluteus maximus tensor fascia lata Semitendinosus (more lateral) biceps femoris semimembranosus gastrocnemius end

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