'alveoli'
The lungs are small in size and are supplemented by Air Sacs. And even the Respiratory Tract
Air sacs are part of the respiratory system
Inside the lungs are alveoli (tiny air sacs). This is where oxygen and carbon dioxide are exchanged.
Aveoli
alveoil
Alveoli
Bronchioles are part of the respiratory system and branch from the bronchus. Air from the bronchus enters the terminal bronchioles that terminate in air sacs known as alveoli.
the alveoli are tiny little air sacsin the lungs where gas exchange takes place.
air sacs
where there's air in your intestines
Smoking destroys your respiratory tract because the chemicals and tar hardens your lungs and air sacs (alveoli), which need to be thin, moist and flexible. Therefore, it is harder to breath when you smoke because your lungs and heart are working harder for gas exchange.
The residual volume is the portion of air in the respiratory tract that cannot be exhaled.