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 vastus medialis is one of five muscles in the anterior compartment of the thigh. It is involved in knee extension, along with the other muscles which make up the quadriceps muscle. The vastus medialis also contributes to correct tracking of the patella.