The three muscles that aid on knee flexion are the semitendiosus, semimembranosus, and the biceps femoris. None of these muscles are considered the prime mover because they all cross two joints. Therefore all three of the muscles are considered to be synergist.
Chat with our AI personalities
The three muscles that make up the hamstring muscle group: the bicep femoris, semitendinosus and semimembranosus and the rectus femoris, one of the quadriceps muscles, all act as knee extensors and hip flexors.
the muscles are -
1.biceps femoris
2.3 vasti
these 4 are collectively known as quadriceps femoris
hamstrings; haven't found the answer to which one is most dominant yet. good luck
The knee is a joint, and as such it doesn't "flex." However, the act of engaging the knee joint results in flexion of the lower leg, and the muscle that flexes the lower leg is the hamstring.