Rectus femoris

Rectus femoris origin

Anterior inferior iliac spine and superior margin of acetabulum

Rectus femoris action

Extends knee and flexes thigh at hip

Rectus femoris antagonist

Hamstring

Rectus femoris insertion

patella, tibial tuberosity

Rectus femoris synergist

sartorius, tensor fascia lata, vastus lateralis, vastus medialis, vastus intermedius;