Knee muscles Flashcards
What are the four Quadriceps called?
Rectus femoris
Vastus lateralis
Vastus medialis
Vastus intermedius
What is the action of the vastus intermedius?
Extend the knee
What are the movement available to the knee?
Extension
Flexion
Lateral and medial rotaion
What is the action of the vastus lateralis?
Extends the knee
What is the action of the vastus medialis?
Extends the knee
What is the action of the rectus femoris?
Extends the knee
Flexes the hip
What happens the the tibia and femur when the knee is fully extended and the knee is locked?
The tibia twists outward
The femur twists inwards
What muscles cause flexion of the knee?
Gracilis Semitendinousus Semimembranosus Bicep femoris Sartorius
What is the action of the semimembranosus?
Extends the hip
Flexes the knee
Rotates the tibia medially
What is the action of the semitendinosus?
Extends the thigh
Flexes the knee
Rotates the tibia medially
What are the names of the hamstring muscles?
Bicep femoris
Semitendinosus
Semimembranosus
What is the action of the bicep femoris?
Flexes the knee
Rotates the tibia laterally
Extends the hip joint
What is the action of the gracilis?
Flexes the knee
Adducts the thigh
Medially rotates the tibia on the femur
What is the action of the sartorius?
Flexes the knee and hip
Laterally rotates the hip
