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.
Extending along the anterior surface of the thigh are the four muscles of the quadriceps femoris group (vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris). These large muscles originate in the ilium and femur and insert on the tibia.... Anatomy Explorer.