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Muscles of the Leg
Muscles
4
Biology
Undergraduate 2
10/18/2007

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Term
Illiopsoas
Definition
Origin: Illiac crest and lumbar vertabrae
Insertion: Lesser trochanter of femur
Action:  Flex trunk, lateral flexion of vertabral column
Term
Tibialis Anterior
Definition
Origin: Lateral condyle of tibia
Insertion: base fo first metatarsal
Action: dorsiflexor of ankle and invertor of foot
Term
Gastrocnemius
Definition
Origin: Medial head:medial femoral condyle; Lateral head: femoral lateral condyle
Insertion:  The two heads unite in ti a broad aponerosis which eventually unties with the deep tendon of the soleus to form the Achilles Tndon
Action:  Powerful plantar flex of ankle
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