Lung Volumes & Capacities

Question 0

As depth of breathing increases this means…

Answer 0

Tidal volume increases, because we are increasingly using our inspiratory reserve volume and expiratory reserve volume

Question 1

As we exercise our depth of breathing…

Answer 1

Increases

Question 2

Our vital capacity does not change =

Answer 2

Tidal volume + inspiratory + expiratory reserve volume

Question 3

Tidal volume (TV) =
Change during exercise:

Answer 3

Amount of air breathed in or out per breath

Increases

Question 4

Inspiratory reserve volume (IRV)=

Change during exercise =

Answer 4

Maximal amount of air forcibly inspired following end of resting inspiration

Decreases

Question 5

Expiratory reserve volume (ERV) =

Change during exercise =

Answer 5

Maximal volume expired following end of resting expiration

Decreases

Question 6

Residual volume (RV) =
(TLC - VC)
Change during exercise =

Answer 6

Volume of air remaining in the lungs at the end of maximal expiration

Remains the same

Question 7

Inspiratory capacity (IC)=
(TV + IRV)
Change during exercise =

Answer 7

Maximum volume of air inspired from resting expiratory levels

Increases

Question 8

Vital capacity (VC) =
(IRV + TV + ERV)
Change during exercise =

Answer 8

Maximum volume of air forcibly expired following maximal inspiration

Slight decrease

Question 9

Total lung capacity (TLC) =
(VC + RV)
Change during exercise =

Answer 9

Volume of air that is in the lungs following maximal inspiration

Slight decrease

Question 10

Minute ventilation (VE) =
(TV x f)
Change during exercise =

Answer 10

Volume of air inspired or expired per minute

Dramatic increase

Question 11

Minute ventilation =

Answer 11

Moving air in and our of our lungs

Minute ventilation is the amount of air that is moved in and out of the lungs in one minute

A function of our depth of breathing (tidal volume) and the frequency of breathing

VE = frequency of breathing x tidal volume (ml)

During exercise both the depth and rate increase that VE fan approach 180-200 for male endurance athletes

Question 12

Lung function is measured using a …

Answer 12

Peak flow meter or a more complex machine called a spirometer

Question 13

Capacity varies with…

Answer 13

Age
Sex
Body shape
Fitness level

Question 14

Respiratory fitness is determined by measuring the …

Answer 14

Maximum amount of oxygen that can be used by a person’s body - VO2 max

Question 15

The higher the VO2 max…

Answer 15

The fitter the individual

Question 16

Effects of exercise:

Answer 16

More oxygen is required by the muscles and more carbon dioxide is produced for removal
Breathing rate increases
Depth of breathing increases
Blood flow through lungs increases

Question 17

Effects of smoking:

Answer 17

Damages your lungs
Reduces the amount of oxygen that can be carried in blood
Damages the lining of airways and increases the amount of mucus produced
Reduces alveolar function
Increases the risk of lung infection, emphysema, bronchitis, asthma and lung cancer
Reduces vital capacity
Reduces aerobic fitness