Muscles of the Lower Extremity Inferior Half

Hip LegFootMuscles of the Lower ExtremityInferior Half1HipGluteus MaximusGluteus Medius2Gluteus MaximusFunction: Extends and rotates the thigh

Origin: Pelvis and sacrum

Insertion: Femur (posterior)

3Gluteus MediusFunction: Extends and rotates the thighSits above the gluteus maximusOrigin: pelvis (posterior) Insertion: top of femur

4Upper LegSartoriusQuadriceps MusclesHamstring Muscles5SartoriusFunction: flexes lower legLongest muscle in the body (anterior) Origin: pelvisInsertion: medial side of tibia

Muscle you use to: - Play Hacky Sack - Cross your legs Man style

6Quadriceps MusclesQuadriceps 4 muscles make up the Quad on the anterior side of legVastus MedialisVastus IntermediusVastis LateralisRectus femoris

Function: Extends the leg & knee and flexes of the hip & thigh

7Quadriceps (Quads)Origin: Lower part of the pelvis and top of the femurInsertion: patella (knee cap)

Vastus Medialis (VMO)Located on the inside of your thighVastus IntermediusLocated next to the vastus lateralisVastus LateralisLocated on the outside of your thighRectus FemorisLocated next to the sartoriusGoes over all the vastus muscles and sits on top8

9Hamstring Muscles3 muscles make up the hamstringBiceps FemorisSemimembranosusSemitendinosusThey are located on the posterior side of the legFunction: Flexes the knee and extends the thigh10Hamstring MusclesOrigin: Back of PelvisInsertion: Tibia (medial & lateral)

Biceps FemorisLateral (insertion)hamstring muscleSemimembranosusMost Medial (insertion)hamstring muscleSemitendinosusMedial (insertion)hamstring muscle11

12Lower LegTibialis AnteriorExtensor Digitorum LongusPeroneus (Fibularis)Longus Peroneus (Fibularis)BrevisGastrocnemius (Calf)Soleus (Calf)Flexor Digitorum Longus13Tibialis AnteriorFunction: flexes the foot muscle on your shin boneOrigin: Tibia Insertion: Metatarsal

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Extensor Digitorum LongusFunction: Moves your toes/digits 2-5Origin: top of tibia and fibulaInsertion: Phalanges (2-5) Located next to tibialis anterior on the outside of the leg15Peroneus LongusFunction: Flexes the foot; arch support muscle (side of leg)Origin: FibulaInsertion: Big toe (1st metatarsal)

16Peroneus BrevisFunction: Flexes foot; arch support muscleOrigin: shaft of fibulaInsertion: your little toe (outside lower leg)

17GastrocnemiusFunction: (posterior) bends the knee; points the toes or plants the foot downOrigin: bottom of the femurInsertion: heel bone (calcaneus)

18SoleusFunction: (posterior) extends or depresses the foot when standing or walking; points the foot downOrigin: tibia and fibulaInsertion: heel bone (calcaneus)

19Flexor Digitorum LongusFunction Flexes Second Through Fifth Toes, Inverts Foot, Weak Plantar Flexion Of Ankle

Origin Middle Posterior Surface Of Tibia Insertion Distal Phalanges Of Second Through Fifth Toes

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