The document lists and tests the reader's knowledge of 14 major muscle groups in the human body, including the rectus abdominis, external obliques, erector spinae, deltoid, pectoralis major, biceps brachii, trapezius, latissimus dorsi, triceps, iliopsoas, sartorius, quadriceps, gastrocnemius, and hamstrings. It then provides a 15 question quiz to test the reader's ability to match each muscle group with its corresponding name.