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The Respiratory System & Ventilation

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The Respiratory System & Ventilation

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  1. Lab 7 The Respiratory System & Ventilation

  2. Lab 7 Activities • Biopac L08-Resp-1:  Respiratory Cycle 1 • PhysioEx Exercise 7: Respiratory System Mechanics (computer simulations of spirometry)

  3. Respiratory System Structure

  4. Respiratory System Muscles • Muscles of inspiration • diaphragm • external intercostals • Muscles of expiration • internal intercostals • abdominals

  5. Pulmonary Ventilation: Inspiration + Expiration

  6. CO2 & pH Levels Influence Ventilation Rate • Bicarbonate formation driven by the RBC enzyme: carbonic anhydrase CO2 +H20 ⇌ H2CO3-⇌HCO3- +H+

  7. O2 and CO2 Transport • Gas exchange in the tissues

  8. Biopac Spirometry Residualvolume

  9. Lung Volumes and Capacities • Pulmonary volumes are measured • Pulmonary capacities are calculated

  10. BioPac: Respiratory Cycle 1 Calibration: Expect lots of trial and error positioning the thermistor and pneumograph transducer Treatment 1: normal breathing 15 seconds Treatment 2: hyperventilation 30 seconds followed by normal breathing 30 seconds Treatment 3: hypoventilation 30 seconds followed by normal breathing 30 seconds Treatment 4: cough once followed by reading aloud 30 seconds followed by normal breathing 30 seconds

  11. BioPacPneumogram Calibration

  12. BioPacPneumogram Example Data hyperventilation cough and then read hypoventilation normal breathing Recovery Recovery

  13. BioPac Data Analysis: Measuring Inspiration Use BLUE recording! Delta T (40) measures inspiratory duration – Record in Table 1 on page Lab 7-13 Repeat for 2 more inspirations

  14. BioPac Data Analysis: Measuring Exhalation Use BLUE recording! Delta T (40) measures expiratory duration – Record in Table 1 on page Lab 7-13 Repeat for 2 more inspirations

  15. BioPac Data Analysis: Measuring Ventilation Use BLUE recording! Delta T (40) measures ventilation duration – Record in Table 1 on page Lab 7-13 BPM (40) measures breaths/minute – Record in Table 2 on page Lab 7-14 P-P (40) measures ventilation amplitude – Record in Table 3 on page Lab 7-14 Repeat for 2 more inspirations Repeat these measurements for all the treatments! Use the RECOVERY SECTIONS!

  16. PhysioEx 7: Measuring Respiratory Volumes • Activity 1: Measuring Respiratory Volumes and Calculating Capacities • Record data in Table 4 on page Lab 7-14

  17. PhysioEx 7: Factors Affecting Respirations • Activity 2: Comparative Spirometry • Record data in Table 5 on page Lab 7-15

  18. PhysioEx 7: Variations in Breathing • Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration • Record data in Table 6 on page Lab 7-15

  19. Complete and turn in the questions on pages 7-13 to 7-15 Don’t forget to print the entire pneumogram(landscape format) you recorded to include in your lab report. Label your pneumogram Complete Assignment 7 on MasteringAandP. Homework

  20. Lab 7 The End