The ultimate goal of this book is to answer common questions about human physiology. It is a didactic summary based on the current literature. The book is divided into chapters to make it easier to find sections of interest, and it follows a logical and sequential order. It is impossible to understand any other related subject without first reviewing and understanding the beauty of human physiology. In the following pages, we will examine the details of all of the features that make up human physiology for health-related courses and educational programs.