Lung Capacity (Human Limits) trivia
Lung Capacity (Human Limits) Mini Quiz
Test your knowledge with these top questions!
Which lung structures provide most of the surface where oxygen enters the blood?
Alveoli are thin-walled air sacs surrounded by capillaries where oxygen enters blood and carbon dioxide leaves it.
During a deep inhale, what does the diaphragm do to increase lung space?
The diaphragm is the main breathing muscle; its downward movement enlarges the chest cavity and draws air into the lungs.
Why does the left lung usually hold slightly less air than the right lung?
The left lung has two lobes and a cardiac notch, while the right lung has three lobes.
What is the air called that remains in the lungs after a forceful exhale?
Residual volume helps keep alveoli open and allows gas exchange to continue between breaths.