human) head. face is used when referring to physical features: a pretty face with high cheekbones. countenance, a more formal word, denotes the face as it is affected by or reveals a person's state of mind; hence, it often signifies the look or expression on the face: a thoughtful countenance.
Muscles Around the Knee. 1  Quadriceps femoris musclesâa large muscle group on the front of the thigh. 2  Vastus lateralisâpart of the quadriceps femoris on the outside-front of the thigh, it extends or straightens the leg and is controlled by the femoral nerve. Vastus lateralisâpart of the quadriceps femoris on the outside-front of the thigh, it extends or straightens the leg and is controlled by the femoral nerve. 2  Vastus intermediusâpart of the quadriceps femoris on the center-front of the thigh, it extends or straightens the leg and is controlled by the femoral nerve.
The patella, or kneecap, is the loose, moveable bone on the front of the knee. The patella is a link between the pelvis, hip, and foot. The patella is part of the extensor mechanism of the leg; the extensor mechanism acts as a stabilizer when we straighten our leg. very common knee problem is when the patella moves as the knee bends or straightens. This happens because of a muscle or structural imbalance. Normally the patella moves along a path controlled by the quadriceps muscle.