UNIT 1 : OVERVIEW OF ANATOMY AND PHYSIOLOGY

Objectives Overview • Anatomy is the study of structure – What is it? • Physiology is the study of function – What does it do? • Anatomy is what makes physiology possible • These approaches are complementary and never entirely separable. • Together, they form the foundation of the health sciences Anatomy • Definition: The Study of Form – Anatomy is the study of structure, often done by dissection of cadavers Physiology • Definition: The Study of Function – Physiology is the study of function and is primarily an experimental science • Major goals – To understand and predict the body's responses to stimuli – To understand how the body maintains conditions in the presence of a continually changing environment • 6 levels: – Chemical – Cellular – Tissue – Organ – System – Organism Organisation of the human body • Chemical level – Atoms -> Molecules -> Organelles Organisation of the human body • Cellular level – Different organelles -> Cells Organisation of the human body • Tissue level – Collection of cells ->Tissues Organisation of the human body Organisation of the human body • Organ level – Two or more types of tissue -> Organ • System level – Two or more organs with similar function-> system Organisation of the human body • Organism level – Single complete individual Organisation of the human body Organ Systems • Integumentary system – Protects against damage • Skeletal system – Provides form, support and stability • Muscular system – Provides movement • Nervous system – Communication between and coordination of all the body systems Organ Syst