Tidal volume is the volume of air breathed in or out in a single normal breath.

When would you use the respiratory minute ventilation equation?

To calculate the total volume of air breathed in or out per minute.

Calculate the respiratory minute ventilation when tidal volume = 0.5 dm³, breathing rate = 13 breaths per minute.

Respiratory minute ventilation = 0.5 × 13 = 6.5 dm³/min.

What is a spirometer used for?

A spirometer is an apparatus used to measure lung volumes and breathing patterns by recording the movement of air into and out of the lungs.

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Spirometry and ventilation during exercise

3 things to know
Papers 2 and 3

Overview

Recall questions on tidal volume, breathing rate and minute ventilation, reading a spirometer trace, and how each changes with exercise.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Key term

Define tidal volume.

Numbers

State the formula for calculating respiratory minute ventilation.

Key term

What is breathing rate?

Questions from this subtopic

Each one with the model answer underneath.

1
Define tidal volume.
Model answer
Tidal volume is the volume of air breathed in or out in a single normal breath.
2
What is breathing rate?
Model answer
Breathing rate is the number of breaths taken per minute.
3
State the formula for calculating respiratory minute ventilation.
Model answer
Respiratory minute ventilation = tidal volume × breathing rate.
4
When would you use the respiratory minute ventilation equation?
Model answer
To calculate the total volume of air breathed in or out per minute.
5
Calculate the respiratory minute ventilation when tidal volume = 0.5 dm³, breathing rate = 13 breaths per minute.
Model answer
Respiratory minute ventilation = 0.5 × 13 = 6.5 dm³/min.
6
What is a spirometer used for?
Model answer
A spirometer is an apparatus used to measure lung volumes and breathing patterns by recording the movement of air into and out of the lungs.

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