Which of the following muscles plays an impoant role in lifting the left foot off the ground while walking?: (A) Left gluteus medius, (B) Left gluteus maximus, (C) Right adductor longus, (D) Right gluteus medius
Answer is D. The right gluteus medius and the right gluteus minimus lift the pelvis so that the left lower limb is raised, thus permitting the left foot to be advanced forward clear of the ground.