Gas Exchange Explained🫁 🎈Gas exchange happens in the alveoli — the tiny air sacs where oxygen enters the blood and carbon dioxide leaves. 🫁 In healthy lungs, air moves in and out easily…but when the alveoli are damaged, like in COPD, they lose their elasticity. Air gets trapped and leaks out, making gas exchange inefficient and leading to shortness of breath! #nursingschool #nursingstudent #BSN #RN #LPN #gasexchange #respiratory #nurse | Nurse In The Making