Sigue el aliento humano

What happens to the lungs when you inhale?

• They shrink.

• They stay the same size.

• They disappear.

• They grow.

Through which structures does air pass before reaching the alveoli?

• Bronchioles

• Veins

• Arteries

• Capillaries

What essential gas enters the bloodstream in the alveoli?

• Helium

• Carbon Dioxide

• Oxygen

• Nitrogen

What is the waste gas that is expelled from the body during exhalation?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen

What happens to the lungs during exhalation?

• They shrink.

• They expand.

• They inflate.

• They stay the same size.