Anatomy is the branch of biology that studies the structure of living organisms. It focuses on the physical organization of cells, tissues, and organs, helping us understand how these components work together to support life. Anatomy can be divided into two main categories: gross anatomy, which examines structures visible to the naked eye, and microscopic anatomy, which looks at structures that require a microscope. Understanding anatomy is essential in various fields, including medicine, biology, and physical therapy. It provides the foundational knowledge needed for professionals to diagnose and treat medical conditions, as well as to study the functions of different body systems, such as the muscular system and nervous system.