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Muscles 1

Muscles of the Pelvic Girdle & Leg

Muscle NameOrigin (O) and Insertion (I)Action
Biceps Femoris O: Ischial Tuberosity I: Head of Fibula Extend thigh and flex knee
Semitendinosus O: Ischial Tuberosity I: Top of Tibia Extend thigh and flex knee
Semimembranosus O: Ischial Tuberosity I: Medial Tibial Condyle Extend thigh and flex knee
Gluteus Maximus O: coccyx I: Gluteal Tuberosity of Femur Extends thigh
Gluteus Medius O: Lateral surface of ilium I: Greater trochanter Abducts thigh
Tensor Fasciae Latae O:Iliac Crest I: Lateral Side of Tibia Abducts and Flexes thigh
Gracilis O: Pubis I: Medial side of tibia Adducts thigh Medially rotates thigh during walking
Adductor Longus O: Pubis I: Linea Aspera Adducts thigh
Pectineus O: Pubis I: Between Lesser Trochanter and Linea Aspera Adducts thigh
Rectus Femoris O: Anterior-Inferior Iliac Spine I: Patella and Tibial Tuberosity Extend leg at the knee and flex the thigh at hip
Vastus Lateralis O: Greater Trochanter I: Patella and Tibial Tuberosity Extend leg at the knee
Vastus Intermedius O: Anterior and Lateral surface upper shaft of femur I: Patella and Tibial Tuberosity Extend leg at the knee
Vastus Medialis O: Linea Aspera I: Patella and Tibial Tuberosity Extend leg at the knee
Sartorius O: Anterior-Superior Iliac Spine I: Medial side of tibia Flexes knee and hip. Laterally rotates thigh at hip. Medially rotates lower leg at knee. (Crossing your legs)
Tibialis Anterior O: Lateral Condyle I: Medial Cuneiform & 1st Metatarsal Dorsiflexion
Gastrocnemius O: Medial and Lateral Condyles of Femur I: Calcaneous Plantar Flexion
Soleus O: Upper Tibia I: Calcaneous Plantar Flexion
Fibularis Longus O: Head of Fibula I: 1st Metatarsal Plantar Flexion
Iliopsoas O: Iliac Fossa I: Lesser Trochanter Prime mover for hip flexion. Laterally rotates thigh
Created by: pberres0503