quadriceps n : a muscle of the thigh that extends the leg [syn: quadriceps femoris, musculus quadriceps femoris, quad]
- "Quads" redirects here. For other uses see Quad
It is subdivided into separate portions, which have received distinctive names.
- The other three lie deep to rectus femoris and originate from the body of the femur, which they cover from the trochanters to the condyles:
The quadriceps is also involved in Lombard's Paradox.
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step.
Image:Knee diagram.png|Knee diagram Image:Gray432 color.png|Cross-section through the middle of the thigh.
quadriceps in German: Musculus quadriceps femoris
quadriceps in Spanish: Cuádriceps
quadriceps in French: Muscle quadriceps fémoral
quadriceps in Italian: Muscolo quadricipite femorale
quadriceps in Hebrew: השריר הארבע ראשי
quadriceps in Latin: Musculus quadriceps femoris
quadriceps in Dutch: Musculus quadriceps femoris
quadriceps in Japanese: 大腿四頭筋
quadriceps in Polish: Mięsień czworogłowy uda
quadriceps in Portuguese: Quadríceps
quadriceps in Finnish: Nelipäinen reisilihas
quadriceps in Slovenian: Štiriglava stegenska mišica
quadriceps in Swedish: Quadriceps
quadriceps in Chinese: 股四頭肌