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Lab Practical Instructions

Lab Practical Instructions. Put your stuff down in the back and sit down (all you need is a pen/pencil) Take an answer sheet When we begin, you will have 60 sec per station When timer beeps, move over one station . Remain seated except when changing seats

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Lab Practical Instructions

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  1. Lab Practical Instructions • Put your stuff down in the back and sit down (all you need is a pen/pencil) • Take an answer sheet • When we begin, you will have 60 sec per station • When timer beeps, move over one station. Remain seated except when changing seats • You will have the chance to see a few stations again at the end

  2. Practical Instructions • Scopes: all are set up and focused, with pointers in the right eyepiece pointing to relevant structures • Hearts: flags mark structures • Model: tape marks structures • Vessel diagrams: Numbered lines point to vessels to name

  3. Practical instructions • There are 6 stations per row in the 4 main rows and 2 stations on the side for a total of 26 • Each station has two questions, an A and a B each worth 1 point • There are 2 extra credit points possible) • Write your answers in the blanks. • Start writing in the blank numbered the same as the station you are at. • Move as follows (One seat at a time):

  4. Front of room 6 5 4 3 2 1 26 25 7 8 9 10 11 12 18 17 16 15 14 13 19 20 21 22 23 24 Door

  5. Lab 37A Measuring Respiratory Physiology

  6. Key Respiratory Capacities • Tidal volume: the normal amount you breathe in and out at rest. • ERV (expiratory reserve volume): the amount of air you have left in your lungs after you exhale normally • Vital capacity: Total air volume available. • IRV (inspiratory reserve volume): the amount of air you can inhale after you inhale normally • Residual volume: air left in lungs after maximal exhalation.

  7. Spirometers • We will be measuring expiration only. • Do not do it if you are sick • Use a disposable mouthpiece • Use wet flow spirometer to measure: • Tidal volume: exhale just as you are doing right now, listing to me talk (no, I don’t mean snoring). Should be around 500ml (.5L) • ERV (expiratory reserve volume): exhale normally, pause, hold your nose and exhale as much more as you can into the tube • Vital capacity: inhale max, exhale max, then inhale max again, clip nose, and exhale as much as possible into the hose

  8. To do: • Activity 1: operate the model lung • Activity 2: listen to respiratory sounds • Activity 3: gather data on nonrecording spirometers (groups of 3-4) and follow along with manual pages 552-54: • Measure respirations per minute (have a partner count your breaths) • Measure 3 times, record in lab manual, and calculate avg for: • TV • ERV • VC

  9. To do: • Calculate IRV • Compare to tables (557-58) based on age, height, and sex • Put your final data into the tables on p.563 “Pulmonary Measurements” and 564 “Calculated Pulmonary Capacities.” • Answer the 3 questions after the table on p.564 • For minute respiratory volume (MRV) and IRV, read your lab manual to determine how to calculate these values. • VC = TV+ IRV + ERV

  10. Assignment • Pages 552-554 with data • Pages 563, 564 with data entered into 2 tables titled “Pulmonary Measurements” and “Calculated Pulmonary Capacities” and answers to the three questions on p. 564 • Review Sheet numbers 1-13 ONLY on pages 569-71 • Due next Thurs

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