This document provides an introduction to anatomy and physiology. It defines anatomy as the study of body structure, including both macroscopic and microscopic anatomy. Physiology is defined as the study of how the body functions at various levels. The document then discusses the 10 characteristics of life, 5 needs of organisms, and the major body systems including integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems. It concludes by covering topics like body composition, anatomical position, anatomical planes, and types of body movements.