Respiratory system and its most important organs.. Gas exchange between the body and surrounding environment

Place the device in the body: chest.
Function of the device: exchange of gases between the body and surrounding environment: absorption of oxygen from the surrounding environment (inspiration) and from it to the blood and release of carbon dioxide from blood to air in the lungs and from it to the environment (exhalation).
The device is a long, branched tube that is open from one side to the external environment and ends on the other with very small bags with thin walls. These walls pass oxygen from the air to the blood, Blood to the lungs.