Lung Capacity 2

Question 1

Describe Tidal Volume

Answer 1

-About 0.5 L
-During normal involuntary breathing, we use only small fraction of total capacity

Question 2

Describe Inspiratory Reserve Volume

Answer 2

-Amount of air that can be forcibly inhaled after normal exhalation
-After normal breathing there is considerable amount of room left for more air.

Question 3

Describe Expiratory Reserve Volume

Answer 3

-Volume of air that can be forcibly exhaled after normal exhalation
-Also there is a considerable amount of air left in the lungs

Question 4

Describe Residual Volume

Answer 4

-Volume of air remaining in the lungs after a forced exhalation
-Prevents lungs from collapsing
-Even after expiratory reserve volume is exhausted there is still a volume of air left in the lungs

Question 5

Describe Vital Capacity

Answer 5

The maximum amount of air that can be inhaled or exhaled