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Stack #172622

MuscleOriginInsertionAction
Orbicularis oculi Medial wall of orbit. Circular path around orbit of eye Closes eye
Orbicularis oris Musle fibers surrounding opening of mouth. Skin at corner of mouth Closes and protrudes lips as in kissing, compresses lips against teeth,
Massester Maxilla and zygomatic arch Angle and rumus of mandible Elevates mandible, as in closing mouth
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.
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.
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
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.
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.
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.
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
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.
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.
Brachialis Distal, anterior surface of humerus Ulnar tuberosity and coronoid process Flexes forearm at elbow joint.
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.
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.
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.
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.
Gluteus medius Illium Greater trochanter of femur Abducts thigh at hip joint and medially rotates thigh.
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.
Semitendinosus Ichial tuberosity Proximasl part of medial surface of shaft of tibia. Flexes leg at knee joint and extends thigh at hip joint.
Rectus femoris Anterior inferior illiac spine Patella via quadriceps tendon and then tibial tuberosity via pattela ligamet. extends leg and flexes thigh.
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.
Vastus medialis linea aspera Patella via quadriceps tendon and then tibial tuberosity via pattela ligamet. extends legs
Vastus intermedius Anterior femur patella via quadriceps tendon and then tibial tuberosity via patella ligament extends leg
Satorius Anterior superior illiac spine Medial surface of tibia Flexes leg at knee joint; flexes abducts, and laterally rotates thigh at hip joint.
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.
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.
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.
Soleus Head of fibula and medial border of tibia Calcaneus by way of calcaneal. (Achilled tendon) Plantar flexes foot at ankle joint
Rectus Abdominis Crest of the pubis base of the sternum) 5th,6th and 7th costal cartilages Flexes lumbar spine
Created by: Rachael27