This document provides an introduction to human anatomy and physiology. It defines anatomy as the study of body structure, and physiology as the study of body functions. It discusses the different subdivisions of anatomy including gross, microscopic, and regional anatomy. It explains that anatomy and physiology are closely related, as body structure influences function. The document also introduces homeostasis as the body's ability to maintain stable internal conditions and regulate itself through various mechanisms.

1. Introduction to Human Anatomy & Physiology Chapter 1: Introduction to Human A&P Unit 1: Levels of Organization

5. Histology Testicle Adrenal Gland

6. Surface Anatomy

7. Sectional Anatomy

8. Gross Anatomy