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A&P CH 9 MUSCLES
MUSCULAR SYSTEM
| Question | Answer |
|---|---|
| SKELETAL MUSCLE | Striated(proteins) & voluntary / attached to bones |
| SMOOTH MUSCLE | Nonstriated & involuntary/found in walls of organs (viscera) & blood vessels |
| CARDIAC MUSCLE | Found only in the eart; striated, branched, involuntary |
| Kissing muscle | |
| Trumpeter’s muscle | |
| Harmstrings | |
| Smiling muscle | |
| Toe Dancer’s Muscles | |
| Praying Muscle | |
| Tailor’s Muscle | |
| Swimmer’s Muscle | |
| Achilles tendon | |
| Surprised Muscle | |
| FACIAL MUSCLES | |
| Frontalis | |
| Orbicularis Oculi | |
| Levator Palpebrae Superioris | |
| Orbicularis Oris | |
| Buccinator | |
| Zygomaticus | |
| CHEWING MUSCLES | |
| Temporalis | |
| Masseter | |
| NECK | |
| Sternocleidomasteoid | |
| Trapezius | |
| TRUNK | |
| External Intercostals | |
| Internal intercostals | |
| Diaphragm | |
| Muscle of abdominal wall | |
| External Oblique | |
| Internal Oblique | |
| Transversus abdominis | |
| Rectus Abdominis | |
| Muscles of the Vertebral Column | |
| Muscles of the pelvic floor | |
| SHOULDER & UPPER ARM | |
| Trapezius | |
| Serratus Anterior | |
| Pectoralis Major | |
| Latissimus dorsi | |
| Deltoid | |
| Rotator Cuff Muscles | |
| Supraspinatus | |
| Subscapularis | |
| Infraspinatus | |
| Teres Minor | |
| FOREARM & HAND | |
| Biceps Brachii | |
| Triceps Brachii | |
| Brachialis | |
| Brachioradialis | |
| Flexor & Extensor Carpi groups | |
| Flexor & Extensor Digitorum Groups | |
| THIGH | |
| Gluteus Maxims | |
| Gluteus MEdius | |
| Gluteus Minimums | |
| Lliopsoas | |
| Adductor Group | |
| Adductor longus | |
| Adductor brevis | |
| Adductor Magnus | |
| Gracilis | |
| LEG | |
| Quadriceps Femoris | |
| Rectus femoris | |
| Vastus Lateralis | |
| Vastus Medialis | |
| Vastus Intermedius | |
| Sartorius | |
| Hamstrings | |
| Biceps femoris | |
| Semitendinosus | |
| Semimembranosus | |
| ANKLE & FOOT | |
| Tibalis Anterior | |
| Peroneus Longus | |
| Gastrocnemius | |
| Soleus | |
| MUSCLES | CONTRACTILE UNIT • Large Muscles consist of thousands of single muscle cells (fibers). |
| HOW MUSCLES CONTRACT | |
| RESPONSES OF WHOLE MUSCLE | |
| DAMAGE TO RECEPTOSITES | |
| summation | is the inability of the muscle to relaxes fully when constantly stimulated (electrically) in rapid succession). |
| Twitch | occurs when a single stimulus is delivered to the muscle: the muscle contracts and fully relaxes |
| tetanus | refers to a sustained muscle contraction |
| Contraction and movement | |
| o Sub-minimal stimulus | |
| o Minimal Stimulus | |
| o Maximal stimulus | |
| o Supra- Maximal stimulus | |
| • ISOMETRIC | Increases the contraction without causing movement |
| • ISOTONIC | Produces movement |
| • TONIC: Does not produce movement, increases firmness of muscles that maintain posture | |
| • TWITCH: Quick, jerky contraction | |
| • TETANIC (tetanus) Sustained contraction |
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