Air sacs are part of the respiratory system
The respiratory and circulatory system connect in the lungs. At the alveoli, the air sacs are wrapped closely by capillaries to facilitate gas exchange.
the aveoli
Respiratory. They are the air sacs in your lungs.
Your question is unclear. Are you asking what does the most in the respiratory system , then tiny little sacs called the alveoli do.
The lungs bring air into the air sacs, which are tightly wrapped with capillaries. The capillaries exchange oxygen for carbon dioxide, which the lungs expel.
This system is called the respiratory system. It exchanges oxygen that the cells need to make energy for carbon dioxide which is a waste product that the cells make.
By diffusion across q capillary wall
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 respiratory system. The alveoli are air sacs in the lungs.
The circulatory system and respiratory system work together to provide the body's cells with oxygen and to carry away the carbon dioxide that cells generate as respiratory waste. The respiratory system gets air into lungs and in the small air sacs were oxygen is transported into the blood, and the circulatory system carries the oxygen in the red blood cells and delivers it to cells in need of oxygen. The oxygen is stored in the hemoglobin in the blood, and the blood is pumped around the bodily organs by the heart, releasing oxygen at the organs.
air sacs
The respiratory system