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Stack #172622

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Muscle
Origin
Insertion
Action
Orbicularis oculi   Medial wall of orbit.   Circular path around orbit of eye   Closes eye  
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Orbicularis oris   Musle fibers surrounding opening of mouth.   Skin at corner of mouth   Closes and protrudes lips as in kissing, compresses lips against teeth,  
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Massester   Maxilla and zygomatic arch   Angle and rumus of mandible   Elevates mandible, as in closing mouth  
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Sternocleidomastoid   Sternum and clavicle   Mastoid process of temporal bone   Acting together (bilateraly), flex cervical portion of vertebral column, flex head and elevevate sternum during forced inhalation.  
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Trapezius   Superioir nuchal line of occipital bone   Clavicle and acromion and spine of scapula   Superior fibers elevate scapula and can help extend head. Middle fibers adduct scaupla, inferior fibers depress scapula , superior and inferior fibers together rotate scapula upward; stabalizes scapula.  
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Deltoid   Acromial extremity of clavicle.(anterior head)   Deltoid tubersosity of humerus.   Lateral fibers abduct arm at shoulders joint.; anterior fibers flex and medially rotate arm at shoulder joint; posterior fibers extend and lateraly rotate arm at shoulder joint  
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Pectoralis major   Clavicle(clavicle head)sternum, and coatal cartilage of second to sixth ribs and sometimes to first to seventh ribs(stenocoastal head)   Greater tubercle and lateral lip of the intertubercular sulcus of humerus.   As whole adducts and medially rotates arm at shoulder joint. Clavicular head flexes arm and sternocoastal head extends the flexed arm to side of trunk.  
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Latimus Dorsi   Spines of inferior six thoracic vertebrae,lumbar vertebrae,crests of sacrum and ilium inferior four ribs.   Interburcular sulcus of humerus   Extends, adducts and medially rotates arm at shoulder joint; draws arm inferirly and posteriorly.  
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Seratus anterior   Superior eight or nine ribs   Vertebral border and inferior angle of scapula.   Abducts scaupula and rotates it upward; elevates ribs when scapula is stabalized; "known as boxer's msule" because impotant in horizontal movement such as punching and pushing.  
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External intercoastal   Inferior border of ribs above   Superior border of rib below   Contraction evevates the ribs and increases the anteroposterior and lateral dimesnions of the thoracic cavity, resulting in inhalation, relaxation depresses the ribs and decreses the anterposterior and lateral dimensions of the thoracic cavity resulting i  
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Internal intercoastal   Superior border of rib below   inferior border of rib above   Contraction draws adjacent ribs together to further decrease the anteroposterior and lateral dimensions of the thoracic cavity during forced exhalation.  
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Biceps brachii   Long head originates from tuberacle above glenoid cavity of scapula; short head originates from coracoid process of scapula.   Radial tuberosity and bicipital aponerurosis   Flexes forearm at elbow joint, supinates forearm at radioulnar joints ,and flexes arm at shoulder joint.  
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Brachialis   Distal, anterior surface of humerus   Ulnar tuberosity and coronoid process   Flexes forearm at elbow joint.  
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Tricep brachii   Long head : infraglenoid tubercle a projection inferior to glenoid cavity of scapula.   Olecranon of ulna   Extends forearm at elbow joint and extends arm at shoulder joint.  
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Brachioradialalis   Lateral border of distal end of humerus   Superior to styloid process of radius.   Flexes forearm at elbow joint; supinates and pronates forearm at radioulnar joints to netral postion.  
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External obliques   Inferior eight ribs   Illiac crest and lineas alba   Acting together (bilateraly), compresses abdomen and flex vertebral column; acting singly (unilaterally) laterally flex vertebral column, especially lumbar portion and rotate vertebral column.  
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Gluteus maximus   Illiac crest, sacrum, coccyx and aponeurosis of sacrospinalis.   Illiotibial tract of fascia lata and lateral part of linea aspera( gluteal tuberosity)under greater trochanter of femur.   Extends thigh at hip joint and laterally rotates thigh.  
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Gluteus medius   Illium   Greater trochanter of femur   Abducts thigh at hip joint and medially rotates thigh.  
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Bicep femoris   Long head arises from ischial tuberosity; short head arises from linea aspera of femur.   Hed of fibula and lateral condyle of tibia   Flexes leg at knee joint and extends thigh at hip joint.  
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Semitendinosus   Ichial tuberosity   Proximasl part of medial surface of shaft of tibia.   Flexes leg at knee joint and extends thigh at hip joint.  
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Rectus femoris   Anterior inferior illiac spine   Patella via quadriceps tendon and then tibial tuberosity via pattela ligamet.   extends leg and flexes thigh.  
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Vastus lateralis   linea aspera   Patella via quadriceps tendon and then tibial tuberosity via pattela ligamet.   All four heads extend leg at knee joint; rectus femoris musle actin alone flexes thigh at hip joint.  
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Vastus medialis   linea aspera   Patella via quadriceps tendon and then tibial tuberosity via pattela ligamet.   extends legs  
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Vastus intermedius   Anterior femur   patella via quadriceps tendon and then tibial tuberosity via patella ligament   extends leg  
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Satorius   Anterior superior illiac spine   Medial surface of tibia   Flexes leg at knee joint; flexes abducts, and laterally rotates thigh at hip joint.  
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Tibialis anterior   Lateral condyle and body of tibia and interosseous membrane.   First metatarsal and first (medial )cuneiform.   Dorsiflexes foot at ankle joint and inverts at intertarsal joints.  
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Tibialis posterior   Tibia, fibula, and interosseous membrane   Second,third, and fourth ,metatarsals; navicular;all three cuneiformss and cuboid.   Plantar flexes foot at ankle joint and inverts foot at intertarsal joints.  
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Gastrocnemius   lateral and medial condyles of felur and capsules knee   Calcaneus by way of calcaneal. (Achilled tendon)   Plantar flexes foot at ankle joint and flexes leg at knee joint.  
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Soleus   Head of fibula and medial border of tibia   Calcaneus by way of calcaneal. (Achilled tendon)   Plantar flexes foot at ankle joint  
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Rectus Abdominis   Crest of the pubis   base of the sternum) 5th,6th and 7th costal cartilages   Flexes lumbar spine  
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Created by: Rachael27
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