4 doctors weighed in:

Was wondering where does gas exchange occur in the pulmonary system?

4 doctors weighed in
Dr. Jen Jen Chen
Pediatrics - Pulmonology
3 doctors agree

In brief: Alveoli

At the very end of your airways is a small air sac called alveoli.
Your lungs are made of hundreds of millions of alveoli. Each alveoli is bordered by tiny blood vessels and it is at this junction that gas exchange occurs. Hope this helps!

In brief: Alveoli

At the very end of your airways is a small air sac called alveoli.
Your lungs are made of hundreds of millions of alveoli. Each alveoli is bordered by tiny blood vessels and it is at this junction that gas exchange occurs. Hope this helps!
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Dr. Aaron Milstone
Board Certified, Internal Medicine - Pulmonology
25 years in practice
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