God made it that way and it doesn't need to be described as it is God's will
Exchange of carbon-di-oxide for oxygen takes place between capillaries and tissues.The exchange of gases occur through diffusion.In Lungs, oxygen from inhaled air in the alveolar space moves into the RBCs in the capillaries and the carbon-di-oxide moves form the RBCs in the capillaries to the alveolar space which is exhaled during respiration.In other tissues, the Oxygen is given to the tissues and carbon-di-oxide is taken from the tissues into the blood.Many gases can be exchanged across the capillaries but the exchange of oxygen and carbon-di-oxide occurs normally in the body.
Each alveolar sac is surrounded by a network of capillaries that facilitate the exchange of gases (oxygen and carbon dioxide) between the air in the sac and the bloodstream. This close proximity allows for efficient gas exchange in the lungs.
as it moves through blood vessels capillaries in the alveoli walls, your blood takes oxygen from the alveoli and gives off carbon dioxide to the alveoli
In the lungs, in the alveolar capillaries
Oxygen molecules diffuse across the alveolar membrane in the lungs into the bloodstream. This is where gas exchange occurs, with oxygen moving from the alveoli into capillaries surrounding the alveoli.
Alveolar connective tissue is a type of loose connective tissue found in the alveoli of the lungs. It provides support and structure to the alveoli, which are responsible for gas exchange in the lungs. Additionally, alveolar connective tissue contains capillaries that facilitate the exchange of oxygen and carbon dioxide between the lungs and the bloodstream.
Capillaries exchange food, oxygen, and carbon dioxide.
An alveolar plateau refers to the phase during a pulmonary function test when stable alveolar gas exchange occurs, resulting in a horizontal line on the volume-time curve. This plateau indicates that sufficient time has elapsed for oxygen and carbon dioxide to equilibrate between the alveoli and the capillaries. It is used to assess the efficiency of gas exchange in the lungs.
Within the lungs.
The process by which gaseous exchange occurs at the alveolar-capillary membrane is called external respiration. This involves the exchange of oxygen and carbon dioxide between the alveoli in the lungs and the blood capillaries surrounding them.
Blood releases carbon dioxide and acquires oxygen, in the lungs. The opposite exchange takes place throughout the body on a cellular level, as each cell consumes oxygen from the blood and releases carbon dioxide into the blood.
Oxygen passes from the air sacs in the lungs to the blood in the capillaries, carbon dioxide passes the other way.