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.
1 Attachments: It originates from the pectineal line on the anterior surface of the pelvis, and attaches to the pectineal line on the posterior side of the femur, just inferior to the lesser trochanter. 2  Actions: Adduction and flexion at the hip joint.he quadriceps femoris is the main extensor of the knee. Vastus Muscles. There are three vastus muscles â vastus medialis, vastus intermedius and vastus lateralis. They are located exactly where their names suggest; the medialis lies on the medial side of the anterior thigh, and the lateralis lies on the lateral side.