Vernier Software and Technology
Vernier Software & Technology

Control of Human Respiration

Figure from experiment 26 from Biology with Vernier


Your respiratory system allows you to obtain oxygen, eliminate carbon dioxide, and regulate the blood’s pH level. The process of taking in air is known as inspiration, while the process of blowing out air is called expiration. A respiratory cycle consists of one inspiration and one expiration. The rate at which your body performs a respiratory cycle is dependent upon the levels of oxygen and carbon dioxide in your blood.

You will monitor the respiratory patterns of one member of your group under different conditions. A respiration belt will be strapped around the test subject and connected to a computer-interfaced Gas Pressure Sensor. Each respiratory cycle will be recorded by the computer, allowing you to calculate a respiratory rate for comparison at different conditions.


In this experiment, you will

  • Monitor the respiratory rate of an individual.
  • Evaluate the effect of holding of breath on the respiratory cycle.
  • Evaluate the effect of rebreathing of air on the respiratory cycle.

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Option 1

Option 2

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Biology with Vernier »

Experiment 26 from Biology with Vernier Lab Book

<em>Biology with Vernier</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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