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Muscular System

practical test for muscular system

TermOriginInsertionAction
Sartorius (thigh) anterior superior iliac spine medial aspect of proximal tibia flexes and laterally rotates the thigh, flexes the knee
Gracilis (thigh) inferior ramus of pubis medial surface of tibia just inferior to tibial head adducts thigh, flexes and medially rotates leg, especially during walking
Rectus femoris (thigh: quadriceps femoris) anterior inferior iliac spine and superior acetabulum patella and tibial tuberosity flexes the hip and extends the knee
Vastus lateralis (thigh: quadriceps femoris) greater trochanter patella and tibial tuberosity extends the knee
Vastus medialis (thigh: quadriceps femoris) linea aspera patella and tibial tuberosity extends the knee
Vastus intermedius (thigh: quadriceps femoris) anterior and lateral surfaces of femus patella and tibial tuberosity extends the knee
Biceps femoris (thigh: hamstring) ischial tuberosity Head of fibula and lateral condyle of tibia extends thigh at hip, flexes the knee
Semitendinosus (thigh: hamstring) ischial tuberosity medial aspect of upper tibial shaft extends thigh at hip, flexes the knee
Semimembranosus (thigh: hamstring) ischial tuberosity medial condyle of tibia extends thigh at hip, flexes the knee
Tibialis anterior (leg) lateral condyle and upper 2/3 of tibia 1st cuneiform and 1st metatarsal bone dorsiflexion, inversion, and supports medial longitudinal arch
Extensor digitorum longus (leg) lateral condyle of tibia, proximal 3/4 of fibula, interosseous membrane 2nd and 3rd phalanges of toes 2-5 dorsiflexes and everts the foot, primer mover of toe extension
Peroneus longus (leg) head and upper position of fibula by long tendon that curves under foot to 1st metatarsal plantar flexes and everts foot, helps keep foot flat on ground
Flexor digitorum longus (leg) posterior tibia tendon runs behind medial malleolus and splits into 4 to insert into distal phalanges of toes 2-5 plantar flexes and inverts the foot, flexes toes, helps foot "grip" ground
Gastrocnemius (triceps surae) medial and lateral condyles of the femur calcaneous via Achilles tendon plantar flexion
Soleus (triceps surae) superior tibia, fibula, and interosseous membrane calcaneous via Achilles tendon plantar flexion
Gluteus maximus (gluteal region) ilium, dorsal sacrum, and coccyx gluteal tuberosity extension, used when thigh is flexed and force is necessary
Gluteus medius (gluteal region) upper lateral surface of ilium lateral aspect of greater trochanter abduction and medial rotation, important for steadying pelvis during walking
Created by: mchuan