SBI3U1Name: __________________________

MEASURING LUNG VOLUME AND CAPACITY

Part A: Testing For Exhaled Carbon Dioxide

  1. Fill 1/2 of a test tube with water and add 5 drops of indicator solution. Record the initial colour.

  2. Using a straw, carefully blow into the solution but do not let the solution splash out of the test tube. Continue to exhale until a definite colour change occurs. Record the final colour.

  3. Initial ColourFinal Colour
      

Part B: Using The Lung Volume Bags

  1. TIDAL VOLUME (TV)

  2. Sit and breathe normally for 1 minute. Then inhale a normal relaxed breath and exhale normally (do not force air out) into the bag. Repeat two more times and then average the results.

    Trial 1Trial 2Trial 3Average
        

  3. EXPIRATORY RESERVE VOLUME (ERV)

  4. Stand up and breathe normally for 1 minute. After a normal expiration, place the tube in your mouth and forcibly remove all the EXTRA air that you can. Repeat two more times and then average the results.

    Trial 1Trial 2Trial 3Average
        

Part C: Using The Spiropet Gauge

  1. VITAL CAPACITY(VC)

  2. Stand up and breathe normally for 1 minute. Now breathe in as deeply as possible. Place the tube in your mouth and exhale as hard and long as you can to try to empty all the air from your lungs. Repeat two more times and average the results.

    Trial 1Trial 2Trial 3Average
        

Questions (Answer on note paper. Refer to text, pp. 296-297)

  1. Define the terms: tidal volume, expiratory reserve volume, vital capacity, inspiratory reserve volume on pp. 296-297.

  2. Read over the information on "bronchitis" and "emphysema" on pp. 294-295. Then do the "Analysis (a)" and "Synthesis (a-d)" on pg. 297.

  3. Copy the table from "Practice" and do #4-6 on pg. 297.