I purchased the Trail Guide to the Body Vol. 2 Muscles of the Body flashcards to help me learn the muscles of the body. My Anatomy and Physiology Class requires students to learn the muscles, the origin, insertion, and action of each muscle. These flash cards are very nice. They list the O,I,A of each muscle as well as a quick guide to the location, key to bony landmarks and action to palpate a muscle. The flashcards cover the muscles of the shoulder and arm, muscles of the forearm and had, muscles of the spine and thorax, muscles of the head, neck and face, muscles of the pelvis and thigh and muscles of the leg and foot. They give you a metal ring to put the cards on so you can flip through them. This set of cards makes it easy to learn the muscles of the body and the ring makes it easy to carry them around.