Anatomy -- the study of body structures and their relationships among each other Physiology -- the study of the normal functions of body structures Gross Anatomy -- Anatomy that studies structures that can be seen with the naked eye (broad category) surface anatomy -- anatomy that studies external features as well as its relationship to deeper parts Regional Anatomy -- anatomy that focuses on specific body parts (head, neck, arm) Systemic anatomy -- anatomy that focuses groups of organs working together Developmental Anatomy -- anatomy that focuses on growth from conception until death clinical anatomy -- anatomy that focuses on medical specialties Microscopic Anatomy -- anatomy that examines cells and molecules (supercategory) Cytology -- study of cells and functions Histology -- study of tissues and structures cell physiology -- physiology studying processes within and between cells special physiology -- physiology of functions of specific organs systemic physiology -- physiology studying functions of an organ system pathological physiology -- physiology studying the effects of diseases Levels of organization -- chemical/molecular, cellular, tissue, organ, organ system, organism chemical (molecular) level -- Atoms are the smallest chemical units and Molecules are a group of atoms working together cellular level -- made up of organelle working together tissue level -- a group of similar cells working together organ level -- group of different tissues working together organ system level -- consists of different organs that work together closely Organism Level -- Many organ systems work together to perform the functions of an independent being