7.2 measuring ventilation

Question 1

what’s tidal volume

Answer 1

the volume that moves in and out of the lungs with each resting breath

Question 2

what’s vital capacity

Answer 2

the volume that can be breathed in when the strongest possible exhilation is followed by the strongest possible inhilation

Question 3

what’s inspiratory reserve volume

Answer 3

the volume of air that can be breathed in over a normal inhilaton

Question 4

what’s expiratory reserve volume

Answer 4

the amount of air that can be breathed out over the top of a normal exhilation

Question 5

what’s residual volume

Answer 5

the volume of air that’s left into the lungs after the strongest possible exhilation

Question 6

what’s total lung capacity

Answer 6

sum of residual volume and vital capacity

Question 7

what measures the capacity of the lungs

Answer 7

a spirometer

Question 8

what’s ventilation rate

Answer 8

tidal volume x breathing rate

Question 9

what’s breathing rate

Answer 9

number of breaths taken per minute

Question 10

what happens to breathing rate and the tidal volume when oxygen demands increase

Answer 10

tidal volume increases from 15% to around as much as 50% and breathing rate also increases