MUSCULAR SYSTEM
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SKELETAL MUSCLE | Striated(proteins) & voluntary / attached to bones
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SMOOTH MUSCLE | Nonstriated & involuntary/found in walls of organs (viscera) & blood vessels
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CARDIAC MUSCLE | Found only in the eart; striated, branched, involuntary
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Kissing muscle |
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Trumpeter’s muscle |
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Harmstrings |
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Smiling muscle |
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Toe Dancer’s Muscles |
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Praying Muscle |
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Tailor’s Muscle |
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Swimmer’s Muscle |
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Achilles tendon |
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Surprised Muscle |
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FACIAL MUSCLES |
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Frontalis |
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Orbicularis Oculi |
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Levator Palpebrae Superioris |
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Orbicularis Oris |
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Buccinator |
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Zygomaticus |
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CHEWING MUSCLES |
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Temporalis |
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Masseter |
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NECK |
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Sternocleidomasteoid |
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Trapezius |
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TRUNK |
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External Intercostals |
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Internal intercostals |
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Diaphragm |
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Muscle of abdominal wall |
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External Oblique |
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Internal Oblique |
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Transversus abdominis |
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Rectus Abdominis |
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Muscles of the Vertebral Column |
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Muscles of the pelvic floor |
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SHOULDER & UPPER ARM |
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Trapezius |
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Serratus Anterior |
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Pectoralis Major |
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Latissimus dorsi |
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Deltoid |
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Rotator Cuff Muscles |
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Supraspinatus |
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Subscapularis |
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Infraspinatus |
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Teres Minor |
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FOREARM & HAND |
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Biceps Brachii |
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Triceps Brachii |
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Brachialis |
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Brachioradialis |
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Flexor & Extensor Carpi groups |
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Flexor & Extensor Digitorum Groups |
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THIGH |
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Gluteus Maxims |
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Gluteus MEdius |
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Gluteus Minimums |
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Lliopsoas |
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Adductor Group |
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Adductor longus |
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Adductor brevis |
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Adductor Magnus |
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Gracilis |
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LEG |
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Quadriceps Femoris |
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Rectus femoris |
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Vastus Lateralis |
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Vastus Medialis |
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Vastus Intermedius |
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Sartorius |
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Hamstrings |
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Biceps femoris |
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Semitendinosus |
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Semimembranosus |
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ANKLE & FOOT |
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Tibalis Anterior |
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Peroneus Longus |
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Gastrocnemius |
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Soleus |
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MUSCLES | CONTRACTILE UNIT • Large Muscles consist of thousands of single muscle cells (fibers).
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HOW MUSCLES CONTRACT |
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RESPONSES OF WHOLE MUSCLE |
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DAMAGE TO RECEPTOSITES |
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summation | is the inability of the muscle to relaxes fully when constantly stimulated (electrically) in rapid succession).
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Twitch | occurs when a single stimulus is delivered to the muscle: the muscle contracts and fully relaxes
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tetanus | refers to a sustained muscle contraction
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Contraction and movement |
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o Sub-minimal stimulus |
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o Minimal Stimulus |
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o Maximal stimulus |
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o Supra- Maximal stimulus |
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• ISOMETRIC | Increases the contraction without causing movement
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• ISOTONIC | Produces movement
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• TONIC: Does not produce movement, increases firmness of muscles that maintain posture |
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• TWITCH: Quick, jerky contraction |
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• TETANIC (tetanus) Sustained contraction |
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