quadriceps femoris (muscle)
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Related to quadriceps femoris (muscle): hamstring muscles, quadriceps exercises
qua·dri·ceps fem·'o·ris (mus·cle)[TA]
anterior thigh muscles; origin, by four heads: rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis; insertion, patella, and thence by patellar ligament to tibial tuberosity; action, extends leg; flexes thigh by action of rectus femoris; nerve supply, femoral.