Isolated Functions of Major Muscles

JointJoint ActionPrimary Mover(s)
AnkleDorsiflexionAnterior Tibialis
PlantarflexionPosterior Tibialis, Soleus, Gastrocnemius
InversionAnterior & Posterior Tibialis
EversionPeroneus Longus

JointJoint ActionPrime Mover(s)
KneeFlexionHamstring Complex (Semimembranosus,
Semitendinosus, Biceps Femoris)
ExtensionQuadriceps (Rectus Femoris, Vastus Lateralis,
Vastus Medialis, Vastus Intermedius)

JointJoint ActionPrime Mover(s)
HipFlexionIliacus, Psoas Major, Sartorius
ExtensionGluteus Maximus
AbductionGluteus Medius, Gluteus Minimus
AdductionAdductor Complex
Internal RotationTensor Fascia Latae, Gluteus Medius,
Gluteus Minimus
External RotationAdductor Complex, Gluteus Maximus

JointJoint ActionPrime Mover(s)
Spine/ TrunkFlexionRectus Abdominis, Obliques
ExtensionErector Spinae
Lateral FlexionQuadratus Lumborum
RotationObliques, Rectus Abdominis

JointJoint ActionPrime Mover(s)
Gleno-HumeralFlexionPectoralis Major, Anterior Deltoid, Coracobrachialis
ExtensionLatissimus Dorsi, Teres Major, Posterior Deltoid
AbductionMiddle Deltoid, Supraspinatus
AdductionPectoralis Major, Latissimus Dorsi, Teres Major
Internal RotationPectoralis Major, Latissimus Dorsi, Teres Major, Subscapularis
External RotationTeres Minor, Infraspinatus
Scapulo-ThoracicRetractionRhomboid Major and Minor, Middle Trapezius
ProtractionSerratus Anterior, Pectoralis Minor
ElevationUpper Trapezius
DepressionLower Trapezius

JointJoint ActionPrime Mover(s)
ElbowFlexionBiceps Brachii, Brachialis,
ExtensionTriceps Brachii

Disclaimer: The above table offers a simplified list of muscle groups for joint actions, Please do note that joint movements are not limited to the actions of just one muscle, multiple muscles work in order to produce movement.