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Chapter 1: An Introduction to Physiology

Chapter 1: An Introduction to Physiology. Helped to define physiology. The power of nature. Hippocrates (460-370 B.C.). The healing power of nature. Aristotle (384-322 B.C.) with bust of Homer. Physiology is:. the study of the functions of a living organisms and its component parts.

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Chapter 1: An Introduction to Physiology

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  1. Chapter 1: An Introduction to Physiology

  2. Helped to define physiology The power of nature Hippocrates (460-370 B.C.) The healing power of nature Aristotle (384-322 B.C.) with bust of Homer

  3. Physiology is: • the study of the functions of a living organisms and its component parts.

  4. Function versus Process Why RBC carry O2? How does RBC carry O2? Mechanistic Teleological

  5. Physiology covers: atoms to species

  6. Physiology is divided into 10 physiological systems.

  7. Find the 10 systems!

  8. A balance exists between and within external and internal environments.

  9. Loss of balance Balance

  10. Scientific Inquiry and Presentation(These concepts will be used in our lab experiments.)

  11. Scientific Inquiry • Observation • Hypothesis • Experimentation • Control and treatment • Presentation of Data • graphs

  12. Let’s illustrate scientific inquiry.

  13. Researchers have observed that the prostate cancer is a common cancer among all men but incidence of prostate cancer varies by ethnicity.

  14. First the state an hypothesis.

  15. Hypotheses may include the following concepts • Diet may influence onset • Environmental exposure to carcinogens: smoking • DNA mutations

  16. Population based Experimental Designs • Prospective study • Cross sectional study • Retrospective study

  17. Experimental Terms and Concepts • What would be an experiment? • What is a control group? • What is a treatment group? • What is a placebo effect? • What is a nocebo effect? • What is a blind experiment? • What is a double blind experiment

  18. How might you “present” data?

  19. Dependent= onset of puberty Independent variable: “altered/manipulated variable” = % fat

  20. Do all data establish a scientific theory? • Why or why not?

  21. What then is the difference between a hypothesisand a theory? Can a theory be disproven?

  22. Geocentric vs. heliocentric view 1500 years passed Ptolemy 140 A.D. Copernicus 1580

  23. Concepts covered: • Definition of physiology • Names of physiological systems • Dependent and Independent Variables • Terms • Homeostasis • Scientific inquiry

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