Oxygen moves into the capillaries from the air sacs. Carbon dioxide moves out the the capillaries into the air sacs.
Capillary: A tiny blood vessel where substances are exchanged between the blood and the body cells.
capillaries
capillaries
Oxygen is exchanged from the air in the alveoli into the blood in the capillaries, while carbon dioxide is exchanged from the blood in the capillaries into the air in the alveoli during the process of respiration.
Capillaries via osmosis
There are only two substances found in between the blood cells and the capillaries. These are plasma and interstitial fluid.
Materials are exchanged between the blood in the capillaries and the blood cells primarily through the process of diffusion. Oxygen and nutrients pass from the capillaries into the blood cells, while carbon dioxide and metabolic waste move from the blood cells into the capillaries. This exchange occurs across the thin walls of the capillaries, which are permeable to these substances, allowing for efficient transfer due to concentration gradients. Additionally, facilitated diffusion and active transport mechanisms can assist in this exchange for specific substances.
Substances exchanged through diffusion between blood and cells.So capillaries should be near to cells.
capillaries
this is a false statement blood capillaries do not exchange in diffrent part of your body
The answer you are looking for is most likely a "capillary". "Capillaries are the smallest of a body's blood vessels...which connect aterioles and venules, and enable the interchange of water, oxygen, and carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissues."
Capillaries are the connection between arterioles and venules. The capillaries job is to enable the exchange of oxygen, water, carbon-dioxide, chemical substances and various nutrients to between blood and the surrounding tissue.