Rectus femoris - Anatomy

Origin	Straight head from anterior inferior iliac spine; reflected head from groove just above acetabulum
Insertion	Base of patella to form the more central portion of the quadriceps femoris tendon
Action	Extends the knee, accessory flexor of hip
Innervation	Muscular branches of femoral nerve (L2, L3, L4)
Arterial Supply	Lateral circumflex femoral artery