• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Lung Volume Measurement Biology Lab. My hypothesis is that the breathing rate and tidal volume increases after exercise.

Extracts from this document...


Trial Inspiratory Reserve Volume IRV (L) Tidal Volume TV (L) Expiratory Reserve Volume ERV (L) Vital Capacity (L) 1 1.5 0.5 0.8 2.8 2 1.6 0.5 0.9 3.0 3 1.4 0.5 1.0 2.9 Average 1.5 0.5 0.9 2.9 Data Collection Table 1: Lung Volume Measurements Table 2: Tidal Volume and Breathing Rate of Rest and After Exercise Tidal Volume TV (L/breath) Breathing Rate (bpm) 1. At Rest 0.5 19 2. After Exercise 1.1 15 Lung Volume Measurement Lab Purpose 1. To measure one's lung volumes including tidal volume, vital capacity, inspiratory reserve volume and expiratory reserve volume. 2. To measure one's tidal volume and breathing rate at rest and after exercise and to compare the results. Hypothesis My hypothesis is that the breathing rate and tidal volume increases after exercise. Materials 1. Spirometer or lung volume measurement bags 2. Stopwatch or clock 3. Disposable mouthpiece Method 1. Read the method and prepare your observation tables ahead of time. 2. Make sure the black zero indicator is properly positioned on your spirometer's scale at zero. ...read more.


Have your partner count the number of breathes you take in one minute after exercise. Record. 10. Perform the step test on the stairs for 3 minutes at level 4 on the CD. Return to the spirometer as fast as possible. Inhale normally. Put the mouthpiece in your mouthpiece and exhale normally. Measure the volume and record this as your tidal volume after exercise. 11. Record your tidal volume at rest from step 4 above Conclusion My lung volume is 3.9L, vital capacity is 2.9L, tidal volume is 0.5L, inspiratory reserve volume is 1.5L and expiratory reserve volume is 0.9L. The hypothesis that the breathing rate and tidal volume increases after exercise is correct. The average vital capacity of males is 5.0L, females is 3.4L. This difference lies in the physiology of both genders; males have broader shoulders compared with females, which gives rise to larger lungs and hence, bigger vital capacities. Several factors that decrease one's lung volume or vital capacity include respiratory illnesses like asthma, chronic bronchitis, emphysema and the common cold, as with the narrowed airways in the lung or inflammation of the lung airways, the lungs cannot take in as much air. ...read more.


The body increases tidal volume and bpm during exercise, as when the respiration rate in the muscles increases, the carbon dioxide level in the blood increases and consequently, the pH of the blood drops, that is the blood becomes more acidic. This decreased pH affects the chemo sensors located in the aorta and carotid arteries. These chemo sensors send messages to the respiratory centres in the brain stem, which in turn send messages to the breathing apparatus (the diaphragm and the intercostals muscles) to increase their activity. These muscles start to contract and relax faster, thus increasing the breathing rate involuntarily. Evaluation 2 limitations of the lab procedure include: the number of trials done on each of the respiratory volumes was low at 3 times only, and the sample of males and females doing the experiment were not enough to infer an accurate result of the experiment. A solution to the first limitation would be to increase the number of trials done on each of the respiratory volumes to at least 20 times, and the second solution would be to gather a larger cohort of students from both genders to carry out the experiment. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. Marked by a teacher

    Neurology and Behaviour. Focus question: Is there an increase in the perception and ...

    5 star(s)

    rating system sheets * Notebook for Observations 5 5 5 5 1 1 20 1 Practical Safety and Risk Assessment The Practical Safety and Risk Assessment is attached to the end of this report in the Appendix. (Appendix Three). A copy of a participant consent form (Appendix Four)

  2. Biology Industrial Melanism of Peppered Moth Lab

    light-coloured moths on light-coloured "tree bark" because of their ability to camouflage in those habits and therefore have higher survival rates from predators. As the opposite colour of moth from its habit dies off, natural selection will favour the moths that can camouflage to its surroundings.

  1. Plant Tropism Lab

    - - - - - A-5 - - - - - - R-1 - - - - - 30 R-2 - - - - - - R-3 - - - 50 150 - R-4 - - - - - - R-5 - - - - - - Aspect 2: Processing

  2. Independent Research Project Vital Lung Capacity

    capability to alter to final results such as a cold or a cough. Materials and Procedure: Material List: * Clear Spirometer (1) * Respective amounts of mouth pieces * Appropriate calculating tools * Individuals afflicted with asthma * Individuals asthma free Procedure: Pre-procedural notes: If you have any affliction such a cold or a cough, do not do this experiment.

  1. IB biology Respiration IA

    33.25 18.13 Jumping Jacks 10.0 1 30 17 35.54 31.31 17.00 Jumping Jacks 10.0 1 30 18 39.54 24.74 21.61 Jumping Jacks 10.0 1 30 19 24.15 31.43 19.36 Jumping Jacks 10.0 1 30 20 53.66 39.00 22.47 Jumping Jacks 10.0 1 30 21 29.01 28.05 26.43 Jumping Jacks 10.0

  2. To investigate how aerobic exercise affects the heart rate

    Method 1. Measure resting heart rate (before exercise) using an automatic blood pressure monitor 2. Perform jumping jacks for amount of time indicated 3. Immediately measure pulse using the blood pressure monitor 4. Record pulse rate in a table 5.

  1. Biology lab What effect does age have on the breathing rate and heart rate ...

    Candidate Experiment no, Initial Breathing rate Breathing rate After 1 minute of exercise Increase in breathing rate per minute Mean increase in breathing rate per minute. Boy 1 (11 years) 1 2 33 29 38 37 5 8 6.5 Boy 2 (12 years)

  2. An investigation on the changes in tidal volume and vital capacity of lungs before ...

    Inhale normally. Put mouthpiece in mouth and exhale normally. . Repeat 3 more times. Measure volume and record as tidal volume. 5. Inhale as deeply as possible. Put mouthpiece in mouth and exhale as much air as possible. Repeat 2 more times. Measure volume and record as vital capacity.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work