Rectus femoris

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

 

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