The anterior thigh is comprised of a group of muscles commonly referenced as the quadriceps. These four muscles - the rectus femoris, vast us medial is, vast us lateral is and vast us intermedius -- all operate on the knee to produce extension. However, only one of the muscles also produces hip flexion. Which one?
A)Vast us medial is
B)Vast us lateral is
C)Vast us intermedius
D)Rectus femoris

Question

Quizplus · Accepted Answer

The rectus femoris muscle is the only member of the quadriceps femoris muscle group that acts both at the hip and knee. Interestingly, while it produces flexion at the hip, it produces extension at the knee. The remaining 3 muscles - the vast us medial is, lateral is and intermedius -- all do one thing well: they produce extension at the knee.

The Anterior Thigh Is Comprised of a Group of Muscles