The Respiratory System & Ventilation

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Presentation transcript:

The Respiratory System & Ventilation Lab 7

Lab 7 Activities Biopac L08-Respiratory Cycle 1: pneumography PhysioEx Respiratory System Mechanics (computer simulations of spirometry)

Respiratory System Structure

Respiratory System Muscles Muscles of inspiration diaphragm external intercostals Muscles of expiration internal intercostals abdominals

Pulmonary Ventilation: Inspiration + Expiration

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

O2 and CO2 Transport Gas exchange in the tissues

Control of Respiration

Biopac Spirometry Residual volume

Lung Volumes and Capacities Pulmonary volumes are measured Pulmonary capacities are calculated

Biopac Set up The respiration transducer- channel 1 The temperature transducer- channel 2 Place the respiration transducer over light clothing, around the chest, above the nipples and below the armpits. Make sure during a maximum expiration it is still snug. Take time calibrating as it is sensitive to tension changes.

BioPac Collecting Pneumogram Data 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

BioPac Pneumogram Calibration

BioPac Pneumogram Example Data hyperventilation cough and then read hypoventilation normal breathing Recovery Recovery

BioPac Data Analysis: Measuring Inspiration

BioPac Data Analysis: Measuring Exhalation

BioPac Data Analysis: Measuring Ventilation Repeat these measurements for all the treatments! Use the RECOVERY SECTIONS!

PhysioEx 7: Respiratory System Mechanics Activity 1: Measuring Respiratory Volumes and Calculating Capacities Record data in Table 4 on page 7-12 of lab manual.

PhysioEx 7: Respiratory System Mechanics Activity 2: Comparative Spirometry Record data in Table 5 on page 7-13 in Lab Manual

PhysioEx 7: Respiratory System Mechanics Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration Record data in Table 6 on page 7-13 in Lab Manual

What you will turn in Pages 7-11 through 7-13. A labeled printout of the pneumogram from Biopac. See page 7-11, question 2 for details on what to label. MasteringAandP activity 7 is due next Friday.

The End Lab 7

Pulmonary Inspiration - Summary

Pulmonary Expiration - Summary

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