Alveoli are the smallest functional units of the lungs. Therefore, they belong to the respiratory system.
alveoli, which are tiny air sacs located in the lungs where oxygen and carbon dioxide exchange occurs.
Alveoli
The alveolar region of the lungs. (alveoli)
The bronchioles branch further into the alveoli in the respiratory system. Alveoli are tiny air sacs where gas exchange occurs between the lungs and the blood.
Lungs
aleovi
The respiratory system. The alveoli are air sacs in the lungs.
in the alveoli
alveoli
Alveoli
Your lungs, the diaphragm, alveoli, bronchi, and capillaries are all in the respiratory system