Editing Quadriceps (section)

{{short description|Group of human leg muscle}}
{{Distinguish|quadratus femoris}}
{{Redirect|Quads|the poker term|List of poker hands#Four of a kind|other uses|Quad (disambiguation){{!}}Quad}}
{{Infobox muscle
| Name        = Quadriceps femoris muscle
| Latin       = musculus quadriceps femoris
| Image       = Quadriceps 3D.gif
| Caption     = Quadriceps femoris, with different muscles in different colors.
{{legend|#4287f5|''[[rectus femoris muscle|rectus femoris]]''}}
{{legend|yellow|''[[vastus lateralis muscle|vastus lateralis]]''}}
{{legend|lime|''[[vastus intermedius muscle|vastus intermedius]]''}}
{{legend|red|''[[vastus medialis]]''}}
| Image2      =
| Caption2    =
| Origin      = Combined [[rectus femoris muscle|rectus femoris]] and [[Vastus muscles|vastus]] muscles
| Insertion   = [[Tuberosity of the tibia|Tibial tuberosity]]
| Blood       = [[Femoral artery]]
| Nerve       = [[Femoral nerve]]
| Action      = [[Knee]] [[Anatomical terms of motion#Flexion and extension|extension]]; [[hip]] [[Anatomical terms of motion#Flexion and extension|flexion]] (rectus femoris only)
| Antagonist  =
}}
The '''quadriceps femoris muscle''' ({{IPAc-en|ˈ|k|w|ɒ|d|r|ᵻ|s|ɛ|p|s|_|ˈ|f|ɛ|m|ər|ᵻ|s}}, also called the '''quadriceps extensor''', '''quadriceps''' or '''quads''') is a large [[muscle]] group that includes the four prevailing muscles on the front of the [[thigh]]. It is the sole [[List of extensors of the human body#Knee|extensor muscle of the knee]], forming a large fleshy mass which covers the front and sides of the [[femur]]. The name derives {{ety|la|four-headed muscle of the femur}}.