Question

the alveoli of lungs do not contain. air because
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Answer 1

Answer:

Explanation:

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they’re microscopic, alveoli are the workhorses of your respiratory system.

You have about 480 million alveoli, located at the end of bronchial tubes. When you breathe in, the alveoli expand to take in oxygen. When you breathe out, the alveoli shrink to expel carbon dioxide.

There are three overall processes involved in your breathing:

moving air in and out of your lungs (ventilation)

oxygen-carbon dioxide exchange (diffusion)

pumping blood through your lungs (perfusion)

Answer 2

Answer:

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they’re microscopic, alveoli are the workhorses of your respiratory system.

You have about 480 million alveoli, located at the end of bronchial tubes. When you breathe in, the alveoli expand to take in oxygen. When you breathe out, the alveoli shrink to expel carbon dioxide.

Explanation:

The Alveoli in Your Lungs

Medically reviewed by Suzanne Falck, M.D., FACP — Written by Marjorie Hecht — Updated on November 26, 2018

Alveoli function

Alveoli structure

Alveoli health

Tips for lung health

Takeaway

Little sacs for oxygen

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they’re microscopic, alveoli are the workhorses of your respiratory system.

You have about 480 million alveoli, located at the end of bronchial tubes. When you breathe in, the alveoli expand to take in oxygen. When you breathe out, the alveoli shrink to expel carbon dioxide.

How alveoli work

There are three overall processes involved in your breathing:

moving air in and out of your lungs (ventilation)

oxygen-carbon dioxide exchange (diffusion)

pumping blood through your lungs (perfusion)

Although tiny, the alveoli are the center of your respiratory system’s gas exchange. The alveoli pick up the incoming energy (oxygen) you breathe in and release the outgoing waste product (carbon dioxide) you exhale.