Muscles Origin/ Insertion/Action
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| sternocleidomastoid | o: sternum, clavicle
i: mastoid process
a: tilts head side to side, rotate head
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| orbicularis oculi | a: close eyelids
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| orbicularis oris | a: compress, protrude lips
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| levator labii superioris | a: elevate upper lip
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| depressor labii inferioris | A:pulls lower lip inferiorly & laterally
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| levator anguli oris | a: elveate angle of mouth
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| depressor anguli oris | pulls angle of mouth down & laterally
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| temporalis | o: lateral surface of cranium
i: coronoid process of mandible
a: elevate, retract, laterally move mandible
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| masseter | o:zygomatic arch
i: mandible
a: elevate protrude mandible
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| trapezius | a: retract, rotate, stabilize, depression, elevate scapula
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| rhomboid major | a: aDduct scapula
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| rhomboid minorr | a: adduct scapula
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| levator scapulae | a: elevate scapula
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| teres major | a: extend should, medially rotate, adduct arm
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| serratus anterior | a: protract & rotate scapula upward
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| latissimus dorsi | a: extend shoulder adduct & medially rotate arm
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| pectoralis major | a: flex adduct shoulder; medially rotate arm
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| pectoralis minor | depress scapula; rotate glenoid cavity inferiorly
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| deltoid | o: clavicle, acromion, scapular spine
i: deltoid tuberosity
a: extend & flex shoulder, abduct arm
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| bicep brachii | o long: upper lipof glenoid cavity
o short: tip of coracoid process
i: radial tuberosity
a: flex elbow & shoulder, supinate forearm & hand
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| coracobrachialis | o: coracoid process
i: shaft humerus
a: flex shoulder; adduct arm
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| brachialis | o: humerus shaft
i: ulnar tuberosity
a: flex elbow
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| triceps brachii | o long: lower lip of glenoid cavity
o lateral: prox. posterolateral humerus shaft
o medial: prox posteromedial shaft of humerus
i: olecranon
a: extend elbow; extend shoulder; adduct arm
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| supraspinatus | o: supraspinous fossa
i: greater tuberosity
a: abduct arm
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| infraspinatus | o: infraspinous fossa
i: greater tuberosity
a: laterally roate arm
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| subscapularis | o:subscapular fossa
i: less tuberosity
a: medially rotate arm
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| teres minor | o: lateral border of scapula
i: greater tuberosity
a: laterally rotate arm
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| brachioradialis | a: flex elbow
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| flexor carpi radialis | a: flex wrist; abduct hand
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| flexor carpi ulnaris | a: flex wrist; adduct hand
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| flexor digitorum superficialis | a: flex digits
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| flexor digitorum profundus | a: flex digits
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| flexor pollicis longus | a: flex thumb
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| palmaris longus | a: flex wrist
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| pronator quadratus | a: pronate forearm & hand
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| pronator teres | a: pronate forearm & hand
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| supinator | a: supinate forearm & hand
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| extensor carpi raadialis | a: extend wrist; abduct hand
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| extensor carpi ulnaris | a: extend wrist adduct hand
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| extensor digitorum | extend digit
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| extensor digiti mini | extend 5 digit
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| extensor indicis | extend 2nd digit
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| abductor pollicis longus | abduct pollicis
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| extensor pollicis brevis | extend pollicis
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| extensor pollicis longus | extend pollicis
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| psoas major | o: transvers processes of l1-l5
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| illiacus | o: iliac fossa
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| iliopsoas | i: lesser trochanter
a: flex hip; laterally rotate thight
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| gluteus maximus | o: gluteal surface & sacrum
i: iliotibial tract & gluteal tuberosity
a: extend hip; laterally rotate thigh
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| gluteus medius | o: gluteal surface
i: greater trochanter
a: abduct thigh; medially rotate thigh
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| gluteus minimus | o: gluteal surface
i: greater trochanter
a: abduct thigh; medially rotate thigh
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| tensor fasciae latae | o: anterior superior iliac spine
i: iliotibialtract
a: tenses iliotibial tract (fascia lata); flex hip; abductt thigh
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| sartorius | o: anterior supoerior iliac spine
i: medial side of tibial tuberosity
a: flex hip; abduct laterally roate thigh; flex knee
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| adductor | adduct thigh
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| gracilis | a: flex hip; adduct thigh; flex knee; medially rotate leg
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| rectus femoris | o: anterior inferior iliac spine
i:tibial tuberosity
a: flex hip; extend knee
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| vastus medialis | o: linea aspera
i: medial side of tibial tuberosity
a: extend knee
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| vastus lateralis | o: linea apsera
i: lateral side of tibial tuberosity
a: extend knee
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| vastus intermedius | o: linea aspera
i: tibial tuberosity
a: extend knee
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| semimembranosus | o:ischial tuberosity
i: posterior to medial condle of tibia
a: extend hip; flex knee
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| semitendinosus | o: ischial tuberosity
i: medial side of tibial tuberosity
a: extend hip; flex knee
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| bicep femoris | o long: ischial tuberosity
o short: linea aspera
i: head of fibula
a long: extend hip; flex knee
a short: flex knee
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| tibialis anterior | a: dorsiflex ankle; invert foot
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| extensor hallucis longus | a:dorsiflex foot; extend hallucis
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| extensor digitorum longus | dorsiflex foot; extend digits; evert foot
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| fibularis longus | plantar flex; evert foot
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| fibularis brevis | plantar flex; evert foot
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| gastrocnemius | plantar flex; flex knee
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| soleus | plantar flex
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| plantaris | flex knee; plantar flex
plantaris tendon
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| popliteus | flex knee; medially rotate leg
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| tibialis posterior | plantar flex; invert foot
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| flexor hallucis longus | plantar flex; invert foot; plantar flex hallucis
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| flexor digitorum longus | plantar flex; invert foot; plantar flex digits
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