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Human Physiology

Human Physiology. Physiology 1 Section 3056 – Mon Lab Section 3057 – Wed Lab Dorena Rode drode@santarosa.edu 577-0379 8am – 8pm. Course Web Site www.dorenarode.com/physiology. Lecture notes Study guide Old tests Study questions Syllabus Links to other resources. Web Check In .

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Human Physiology

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  1. Human Physiology Physiology 1 Section 3056 – Mon Lab Section 3057 – Wed Lab Dorena Rode drode@santarosa.edu 577-0379 8am – 8pm

  2. Course Web Sitewww.dorenarode.com/physiology • Lecture notes • Study guide • Old tests • Study questions • Syllabus • Links to other resources

  3. Web Check In • Why? • To get email alerts, updates, and study tips • To take pretest (4 easy extra credit points) • Monitor grades • Upload your student report

  4. Course Requirements • Attendance at lecture and laboratory • 11 quizzes (drop lowest two) • 3 midterms • Final • Mostly just a fourth midterm • Small section cumulative final • Written/Oral Report • Sign ups will be in lab • Lab assignments; lab quizzes • More details later

  5. How to study for this class Use Chat Room to meet study partners

  6. Science in Perspective Truth Complex Whole Everything Web of Life Scientific Knowledge Physiology How the Body Works Whole Picture

  7. Science in Perspective Assumptions about heart Exercise decreases resting heart rate How the heart beats Other heart related studies Aspirin decreases heart attacks

  8. Scientific Method FOX pg 4-6 • 1. Observing natural phenomenon • 2. Guessing “How” (formulate hypothesis) • 3. Design experiment • 4. Do experiment • 5. Collect/analyze data • 6. Draw conclusions

  9. Biological Organization

  10. cells Basic unit of structure and function in the body

  11. tissues Groups of cells with a similar function. muscular nervous epithelial connective

  12. organs Anatomical and functional units formed by collections of the four tissue types. Heart Liver Skin

  13. systems Collections of organs that perform a common function.

  14. systems nervous endocrine musculoskeletal circulatory respiratory urinary digestive immune reproductive integumentary

  15. Homeostasis • State of dynamic internal constancy. • We maintain homeostasis by using negative feedback mechanisms.

  16. Essential Parameters • heat (measured as temperature) • pH • oxygen • ion concentrations • water • blood pressure • glucose

  17. pH regulation • What is pH? pH = -log [H+] As hydronium ion concentration goes up the pH goes down.

  18. pH regulation • Why do we control pH? • Chemical reactions happen at only certain pH • Proteins are active at certain pH

  19. pH regulation • How do we control pH? • Normal plasma pH = 7.4 • Bicarbonate buffers small changes in pH • We do something and pH drops • Change in pH is detected by sensor • (aortic and carotid bodies) • Signal sent to control center • typically either a hormone or nerve impulse • 6. pH value compared to set point • If outside set point range, then a signal is sent to an effector • Effectors are typically a muscle or gland. Once activated • the cells react to the stimulus and typically produce • either a protein or release vesicles. • 8. Effectors involved in pH regulation: • pulmonary system, renal system, bones

  20. Lab this week: • Lab 1 • Lab 2 (skip question 5) • Should Bill buy Sammy?

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