Designed for children and teens, this book will help to learn about how the human body is made, works and diseases affecting it to better understand them. There are many body systems, parts of the body, and diseases. Although all systems will be provided, only a few body parts and diseases will be discussed in this book. This is not an extensive list of all body parts and every disease in existence. Use this book as a guide for the preparation of basic human anatomy and physiology and disease subject matter. Some basic facts about COVID-19 will be presented.