Trunk flexion/extension?
Rectus Abdominis
Internal/external obliques
Hip flexion?
Iliacus & Psoas
Hip extension?
Gluteus Maximus
Biceps Femoris
Hip abduction?
Glut medius/minimus
Hip internal rotation?
Tensor fasciae latae
Hip external rotation?
Piriformis
Knee flexion?
Hamstrings/Quads
Knee extension?
Quads
Knee external rotation?
Biceps Femoris/Gracilis
Elbow flexion?
Bicep
Elbow extension?
Tricep