Question

multiple choice question
contraction of ______ thigh muscles results in extension of the knee or flexion of the thigh.
o lateral
o medial
o posterior
o anterior

Explanation:

The anterior thigh muscles, specifically the quadriceps femoris, are responsible for knee - extension and also contribute to thigh - flexion. The other muscle groups listed do not have these primary functions. Lateral and medial muscles are more related to abduction and adduction movements respectively, and posterior thigh muscles (hamstrings) are mainly for knee - flexion and thigh - extension.

Answer:

D. anterior