Chapter 7

Question 1

Tidal volume

Answer 1

The volume of air that moves into and out of the lungs with each resting breath. It is around 500cm3 in most adults at rest, which uses about 15% or the vital capacity of the lungs

Question 2

Vital capacity

Answer 2

The volume of air that can be breathed in when the strongest possible exhalation is followed by the deepest possible intake of breath.

Question 3

Inspiratory reserve volume

Answer 3

The maximum volume of air you can breathe in over and above a normal inhalation

Question 4

Expiratory reserve volume

Answer 4

The extra amount of air you can force out of your lungs over and above the normal tidal volume of air you breathe out.

Question 5

Residual volume

Answer 5

The volume of air that is left in your lungs when you have exhales as hard as possible. This cannot be measured directly

Question 6

Total lung capacity

Answer 6

The sum of the vital capacity and residual volume

Question 7

Ventilation rate

Answer 7

Tidal volume x breathing rate (minutes)