Superficial Medial Thigh Muscles Flashcards
Pectineus insertion
Femur (pectineal line )
Pectineus innervation
Femoral n
Obturator n L2,L3
Pectineus action
Hip joint: adduction, external rotation, and slight flexion
Pelvic stabilization
Adductor longus origin
Superior pubic ramus and anterior part of pubic symphysis
Adductor longus insertion
Femur ( middle 1/3 of linea aspera) (medial lip)
Adductor longus and brevis action
Hip joint : adduction and flexion (up to 70 degrees)
Extension (past 80 degrees of flexion)
Stabilize pelvis
Adductor longus innervation
Obturator n. L2-L4
Adductor brevis origin
Inferior pubic ramus
Gracilis origin
Inferior pubic ramus below pubic symphysis
Gracilis insertion
Tibia (medial border of the tibial tuberosity)
Adductor brevis and gracilis innervation
Obturator n L2,L3
Gracilis action
Hip joint: adduction and flexion
Knee joint: flexion and internal rotation
Biceps femoris long head origin
Ischial tuberosity, sacrotuberous ligament
Biceps femoris insertion
Head of fibula
Biceps femoris short head origin
Lateral lip of the linea aspera
Biceps femoris long head innervation
Tibial n L5-S2
Biceps femoris short head innervation
Common fibular n L5-S2
Biceps femoris long head action
Hip joint: extend hip, stabilize pelvis
Knee joint: flexion and external rotation
Biceps femoris short head action
Flexion and ext rotation
Semimembranosus origin
Ischial tuberosity
Semimembranosus insertion
Medial tibial condyle, oblique popliteal lig, popliteus fascia
Semimembranosus and semitendinosus innervation
Tibial n L5-S2
Semimembranosus and semitendinosus action
Hip joint: extends hip, stabilize pelvis
Knee joint: flexion and internal rotation
Semitendinosus origin
Ischial tuberosity and sacrotuberous lig
Semitendinosus insertion
Medial to the tibial tuberosity in the pes ansernus
Pectineus origin
Pectin pubis
Adductor brevis insertion
Femur (pectineal line and proximal 1/3 of linea aspera) (medial lip)
