The content published herein has been peer reviewed and represents authoritative opinions regarding the topics concerned. However, they may not represent the official opinion of the American Academy of Pediatrics (AAP), indicate an exclusive course of treatment, or serve as a standard of medical care. Any mention of product names in this course is for informational purposes only and does not imply endorsement by AAP. Medical content and images contained within may be explicit in nature, however, the descriptions and images of anatomy are intended for educational purposes and are not sexual in nature.