Human Physiology, Body Systems Class Notes

Physiology LectureIntroduction to physiologyLearning objectivesBy the end of the lesson, the student should be able to:Define physiologyExplain the levels of organization Explain the general body systemsExplain the characteristics of lifeDefinition What is physiology?Greek originPhysis- natureOlogy – branch of learning Physiology is the study of the function of the bodyCan also be referred to as the study of the biological functions of organs and their interrelationships Anatomy and PhysiologyPhysiology and anatomy go hand in hand, and the study of one subject relates to the study of the other. ANATOMY = the study of structurePHYSIOLOGY = the study of functions of body partsLevels of organization Atom Molecules Macromolecules Organelles CellsTissuesOrgansOrgan systems (Body systems)Human organism Atom The atom [i.e Carbon (C), Hydrogen (H), or Oxygen (O)] I the least complex level An atom is defined as the smallest particle