Iliopsoas Muscle: flexion and medial rotation of the thigh

• O: Ilium and lumbar vertebrae

• I: femur

Gluteus Maximus: extends the thigh

• O: Ilium, sacrum, coccyx

• I: femur

Adductors: Longus and Magnus

• Longus: adducts, flexes, laterally rotates

• Magnus: adducts, anterior flexion; posterior extension

• O: coxal bone• I: femur

• #9 = gracilis• Adducts thigh; flexes

and medially rotates the leg

• O: pubis• I: tibia

MUSCLES THAT MOVE THE LEG

Quadriceps(4): Rectus femoris; vastus lateralis; vastus medialis;

vastus intermedius

Vastus intermedius: under rectus femoris: extends the leg

Hamstrings (3): biceps femoris, semitendinosus, semimembranosus:

extension of thigh, flexion of leg

Tibialis Anterior

• Dorsiflexion; foot inversion

• O: tibia• I: tarsal bones and

first metatarsal

Soleus

• Plantar flexion• O: tibia and fibula• I: calcaneus