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Stack #58168

muscles action origin insertion nerve

muscleorigininsertionactionnerve
Biceps Brachii long head: tubercle above glenoid cavity, short head: coracoid process radial tuberosity and bicipital aponeurosis flex forearn, supinate forearm at radioulnar joint, flex arm musculocutaneous
coracobrachialis coracoid process of scapula middle of medial surface of shaft of humerus flex and adduct arm musculocutaneous
deltoid acromial extremity of clavicle, acromion and spine of scapula deltoid tuberosity of humerus lateral fibers ABduct, anterior fibers flex and medially rotate, posterior fibers extend and laterally rotate axillary nerve
triceps brachii long head: infraglenoid tubercle,lateral head: lat. and post. surface of humerus superior to groove for nerve, medial head: entire post. of humerus olecranon of ulna extends arm @ shoulder and forearm @ elbow radial nerve
Brachioradialis lateral border of distal end of humerus superior to styloid process of radius flexes forearm @ elbow, supinates and pronates forearm at radioulnar joints to neutral position radial
Infraspinatus infraspinous fossa of scapula greater tubercle of humerus laterally rotates and adducts arm at shoulder joint suprascapular nerve
Supraspinatus supraspinous fossa of scapula greater tubercle of humerus assists DELTOID IN ABDUCTION subscapular nerve
teres MAJOR inferior angle of scapula medial lip of intertubercular sulcus of humerus extends arm at shoulder joint and assists in adduction and medial rotation of arm at shoulder lower subscapular nerve
teres MINOR inferior lateral border of scapula greater tubercle of humerus laterally rotates, extends, and adducts arm at shoulder axillary nerve
subscapularis subscapular fossa of scapula lesser tubercle of humerus medially rotates arm at shoulder upper and lower subscapular nerve
rhomboids major: spines of T2-T5 vertebrae, Minor: C7-T5 vertebral border of scapula inferior and superior to spine (EARS) elevates and adducts scapula, rotates it downward, stabilizes EARS)( dorsal scapular nerve
trapezius superior nuchal line of occipital bone, ligamentum nuchae, and spines of C& -T12 clavicle and acromion and spine of scapula superior fibers elevate scapula, can help extend head, middle fibers adduct scapula; inferior fibers depress scapula; superior and inferior fibers together rotate scapula upward, stabilize scapula accessory (XI) and cervical spinal nerves C3-C5
quadratus lumborum iliac crest and iliolumbar ligament inferior border of rib 12 and first 4 lumbar vertebrae acting together, pull 12th ribs inferiorly during forced exhalation; fix 12th ribs to prevent their elevation during deep inhalation, help extend lumbar portion of column, acting singly, laterally flex vertebral colums, especially lumbar portion thoracic spinal nerve T12, and lumbar spinal nerves L1-L3or L4
Latissimus dorsi spines of inferior 6 thoracic vertebrae, lumbar vertebrae, crests of sacrum and ilium, inferior 4 ribs intertubercular sulcus of humerus extends adducts, and medially rotates arm at shoulder, draws arm inferiorly and posteriorly thoracodorsal
levator scapula superior 4 or 5 cervical vertebrae superior vertebral border of scapula elevates scapula and rotates it downward dorsal scapular nerve and cervical spinal nerves C3-C5
subclavius first rib clavicle depresses and moves clavicle anteriorly and helps stabilize pectoral girdle subclavian nerve
serratus anterior superior 8 or 9 ribs vertebral border and inferior angle of scapula ABDUCTS scapula and rotates it upward, elevates ribs when scapula is stable, "boxer's muscle" long thoracic nerve
pectoralis major clavicle, sternum, costal cartilages of ribs 2-6 greater tubercle and lateral lip of the intertubercular sulcus of humerus as a whole, adducts and medially rotates arm at shoulder, clavicular head also extends the flexed arm to side of trunk medial and lateral pectoral nerves
pectoralis minor ribs 2-5, 3-5, or 2-4 coracoid process of scapula ABDUCTS scapula and rotates it downward, elevates ribs during forced inhalation when scapula is fixed medial pectoral nerve
diaphragm xiphoid process of sternum, costal cartilages inferior 6 ribs, lumbar vertevrae and their discs, and rib 12 central tendon contraction causes it to flatten and increase the vertical dimension of the thoracic cavity, resulting in inhalation; relaxation causes it to move superiorly and decreas dimension, result is exhalation phrenic nerve
biceps femoris long head: ischial tuberosity, short head linea aspera of femur head of fibula and lateral condyle of tibia flexes leg at knee, and extends thigh at hip tibial and common peroneal nerves from the sciatic nerve
semitendinosus ischial tuberosity poximal part of medial surface of tibia flexes leg at knee and extends thigh at hip tibial
semimembranosus ischial tuberosity medial condyle of tibia flexes leg at knee and extends thigh at hip tibial
gastrocnemius medial and lateral condules and posterior surface of femur, capsule of knee joint calcaneus via calcaneal tendon plantar flexion and inversion of foot tibial nerve and S1, S2
soleus head of fibula and medial border of tibia calcaneus via calcaneal tendon plantar flexion and inversion of the foot tibial nerve and S1, S2
vastus lateralis greater trochanter and linea aspera of femur patella via quadraceps tendon and then tibial tuberosity viz patellar ligament extend leg at knee femoral
vastus medialis linea aspera of femus patella via quadraceps tendon and then tibial tuberosity viz patellar ligament extend leg at knee femoral
vastus intermedius anterior and lateral surfaces of body of femur patella via quadraceps tendon and then tibial tuberosity viz patellar ligament extend leg at knee femoral
sartorius Anterior Superior Iliac Spine medial surface of body of tibia flexes leg at knee, flexes, ABDUCTS, laterally rotates thigh at hip femoral
Psoas major transverse processes and bodies of lumbar vertebrae with iliacus to lesser trochanter of femur together w/iliacus flex thigh at hip, rotate thigh laterally, flex trunk as in sitting from lying down position spinal nerves L2, L3
piriformis anterior sacrum superior greater trochanter of femur ABDUCTS leg at hip, laterally rotates thigh sacral spinal nerves S1, S2
tensor fasciae latae iliac crest tibia via iliotibial tract flexes and ABDUCTS thigh at hip superior gluteal
tibialis anterior lateral condyle, and body of tibia, interosseous membrane first metatarsal and first cuneiform dorsiflexes and inverts foot deep peroneal (fibular)
fibularis brevis body of fibula base of 5th metatarsal plantar flexes and everts foot superficial peroneal nerve
occipitofrontalis epicranial aponeurosis skin superior ot supraorbital margin draws scalp anteriorly, raises eyebrows, and wrinkles skin of forehead horizontally as in a look of surprise facial nerve VII
masseter maxilla and zygomatic arch angle and ramus of mandible elevates mandible, as in closing mouth mandibular division of trigeminal nerve V
temporalis temporal bone coronoid process and ramus of mandible eleates and retracts mandible mandibular division of trigeminal nerve V
platysma fascia over deltoid and pectoralis major muscle mandible, muscle around angle of mouth, skin of lower face draws outer part of lower lip inferiorly and posteriorly as in pouting, depresses mandible facial nerve VII
sternocleidomastoid (SCM) sternum and clavicle mastoid process of temporal bone acting together, flex cervical portion of vertebral colum, flex head, and elevate sternum during forced inhalation; singly, laterall extend and rotate head to side opposite contracting muscle accessory nerve XI
Created by: sandy on 2006-12-02



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