Anatomy Lower Extremity Muscles Functions
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| Gluteus Maximus- function | extension, hyperextension, and external rotation of the thigh/trunk at the hip
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| Gluteus Medius- function | abduction of the thigh/trunk at the hip
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| Gluteus Minimus- function | flexion and internal rotation of the thigh/trunk at the hip
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| piriformis- function | lateral rotation of the thigh/trunk at the hip
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| Superior gemellus- function | lateral rotation of the thigh/trunk at the hip
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| Obturator internus- function | lateral rotation of the thigh/trunk at the hip
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| INferior gemellus- function | lateral rotation of the thigh/trunk at the hip
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| Quadratus femoris- function | lateral rotation of the thigh/trunk at the hip
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| Obturator externus- function | lateral rotation of the thigh/trunk at the hip
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| biceps femoris- function | extension, hrperextension and external rotation of the thigh/trunk at the hip. Flexion of the leg at the knee
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| Semitendinosus- function | extension, hyperextension and internal rotation of the thigh/trunk at the hip. Flexion of the leg at the knee
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| Semimembranosus- function | extension, hyperextension and internal rotation of the thigh/trunk at the hip. Flexion of the leg at the knee
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| Iliacus- function | flexion of the thigh/trunk at the hip
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| Psoas major- function | flexion of the thigh/trunk at the hip
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| Psoas minor- function | flexion of the lumbar vertebre
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| Rectus femoris- function | flexion of the thigh/trunk at the hip. Extension of the leg at the knee
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| Vastus lateralis- function | extension fo the leg at the knee
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| Vastus medialis- function | extension of the leg at the knee
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| Vastus intermedius- function | extension of the leg at the knee
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| tensor fasciae latae- function | abduction and flexion of the thigh/trunk at the hip
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| sartorius-function | flexion and lateral rotation of the thigh/trunk at the hip. Flexion of the leg at the knee
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| Pectineus- function | adduction and lateral rotation of the thigh/trunk at the hip
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| Adductor longus- function | Adduction and lateral rotation of the thigh/trunk at the hip
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| Adductor brevis- function | adduction and lateral rotation of the thigh/trunk at the hip
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| adductor magnus- function | adduction and lateral rotation of the thigh/trunk at the hip
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| gracilis- function | adduction and medial rotation of the thigh /trunk at the hip
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| tibialis anterior- function | dorsiflexion and inversion of the foot at the ankle
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| Extensor digitorum longus- function | dorsiflexion of the foot at the ankle. Extension of digits 2-5
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| Extensor hallucis longus- function | dorsiflexion and inversion of the foot at the ankle. Extension of the 1rst digit
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| Fibularis tertius- function | dorsiflexion and eversion of the foot at the ankle
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| Fibularis longus- function | plantarflexion and eversion of the foot at the ankle
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| Fibularis brevis- function | plantarflexion and eversion of the foot at the ankle
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| Gastrocnemius- function | flexion of the leg at the knee. Plantarflexion of the foot at the ankle
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| Plantaris- function | flexion of the leg at the knee. Plantarflexion of the foot at the ankle
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| Soleus- function | plantarflexion of the foot at the ankle
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| Popliteus- function | unlocks the knee from a fully extended position
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| Tibialis posterior- function | plantarflexion and inversion of the foot at the ankle
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| Flexor digitorum longus- function | plantarflexion and inversion of the foot at the ankle. Flexion of the digits
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| Flexor hallucis longus- functino | plantarflexion and inversion of the foot at the ankle. flexion of the 1rst digit
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| Extensor Digitorum brevis- function | extension of digits 2-5
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| Extensor hallucis brevis- function | extension of 1rst digit
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| Dorsal interosseeus- function | abduction of all of the digits
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| Abductor hallucis- function | abduction of the 1rst digit
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| Flexor hallucis brevis- function | flexion of the 1rst digit
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| Abductor digiti minimi- function | abduction of the 5th digit
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| Flexor digiti minimi- function | flexion of the 5th digit
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| Flexion digitorum brevis- function | flexion of digits 2-5
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| Adductor hallucis- function | adduction of 1rst digit
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| Quadratus plantae- function | fixes the tracking of the flexor digitorum longus tendon so that the digits are flexed evenly
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| Lumbrical- function | flexion of the metatarsals while simultaneously extending of hyperextending the phalanges
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| Plantar Interosseus- function | adduction of all of the digits
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