Answer: Movement in his lower extremities
The lower extremity is the part of the body from the hip to the toes (ie. hip, knee, and ankle joints, and the bones of the thigh, leg, and foot). They are the areas whose function will be affected by injury in the right ventral root of his first lumbar vertebrate. The damage will not affect other body functions such as sensation but instead the movement of the muscles. There will be weakness or paralysis in the muscles in the particular area of the body.