Learner's definition of FAMILIARITY. [noncount] 1. : the state of being familiar with something : the state of having knowledge about something â usually + with. His familiarity with local issues helped him during the campaign. The job requires familiarity with current software.
Vastus lateralis. The vastus lateralis muscle is located on the side of the thigh. This muscle is the largest of the quadriceps group (often called quads) which also includes the rectus femoris, the vastus intermedius, and the vastus medialis.
The origin of the vastus lateralis is on the femur near the hip. It then runs down the lateral side of the thigh and attaches to the knee via the quadriceps tendon. This is also where the other two vastus muscles insert although the rectus femoris inserts at the patella tendon.ide lunges strengthen and tone the thighs -- including the vastus lateralis -- and other leg muscles. The vastus lateralis is used when extending the leg. Weak vastus medialis muscles can lead to a number of knee problems. Leg press machines can help improve the strength of the vastus lateralis.