ANATOMY & PHYSIOLOGY An Introduction
What is Anatomy? ana = apart or away tomos = to cut Study of structure Two types: Gross Microscopic
What is Physiology? Study of function- attempts to answer how & why
So What Are We Doing Here? Studying the marriage of structure & function!
Levels of Structural Organization 1. Chemical level
Levels of Structural Organization 2. Cells – basic unit of structure & function
Levels of Structural Organization 3. Tissues – similar cells with a common function
Levels of Structural Organization 4. Organs – performs a specific function & are made of two or more tissue types
Levels of Structural Organization 5. Organ systems – Different organs that work closely together
Levels of Structural Organization 6. Organismal level – Many organ systems make up an individual
Anatomical Position
Directional Terminology
Four Major Body Cavities Dorsal cavities: Cranial cavity – in skull, contains brain Spinal cavity – in vertebrae, contains spinal cord Ventral cavities: Thoracic cavity – in ribs, contains heart & lungs Abdominopelvic cavity – below the diaphragm, includes most digestive & reproductive organs
Regional Terms