Introduction to Anatomy & Physiology Topics Covered here (click on a topic): In the lab… body regions, directional terms, and major organs What is Human Anatomy & Physiology and how are they relate? What is Science? What are the levels of organization of the human body? What are the major body systems in a human? What are the basic functions and requirements of human life? What are enzymes and why do we care? What is homeostasis? What is negative and positive feedback and how are these related to homeostasis?