Lung Volume terminology

Question 1

Tidal Volume

Answer 1

Amount of air moving in and out of lungs in one breath cycle

Question 2

Inspiratory Reserve Volume

Answer 2

The extra volume of air which could be inhaled with maximum effort after reaching the end of a normal inspiration.

Question 3

Expiratory reserve Volume

Answer 3

The excess volume of air which could be exhaled with maximum effort after normal exhalation

Question 4

Residual volume

Answer 4

The left over air which is left in the lungs after maximum expiration (volume of air which cannot be expelled from the lungs)

Question 5

Total Lung Capacity

Answer 5

The amount of air you lungs can hold

Question 6

Vital Capacity

Answer 6

the amount of air exhaled after maximal inhalation. VC = (TV + IRV +ERV)

Question 7

Functional residual capacity

Answer 7

The amount of volume remaining n the lungs after passive exhalation

Question 8

Collateral Ventilation

Answer 8

The ventilation of alveoli which bypass the normal airways: -the interalveolar, the bronchioloalveolar and the interbronchiolar communications.
(The movement of air between the alveoli and bronchioles when airways are obstructed)

= The hold in thoracic expansion aids collateral ventilation