An orgasm is the amazing result of many anatomical structures and physiological systems working together. Enjoyable orgasms are like well-played music. They involve all the basic parts of your instrument playing in harmony. Unfortunately, many people begin having sex with very little background knowledge about how their body or their partner's body works. This can sometimes lead to frustrating experiences. For more reliably satisfying sex, it is helpful to know all the different sexual body parts and understand what notes they play.