A gill is a filamentous organ specialized for the exchange of gases underwater. Some aquatic animals have gills that are adapted in such a way so as to allow them to breathe out of the water.
the blood vessel which allows gas exchange to occur is the capillaries
stomata
Stomata and lenticells
Stomata are small openings in the surface of leaves that allow for the exchange of gases such as water vapor, oxygen, and carbon dioxide. This exchange is essential for photosynthesis and respiration in plants.
It increases surface area and allows the animal to exchange gases and lose waste by diffusion.
In the lungs, exchange of gases occurs in the alveoli(sing: alveolus).
Capillary vessels.
During the stage of photosynthesis, the exchange of gases occur in the leaves.
To breath when the rest of them is underwater
Gas exchange across a membrane requires a concentration gradient of the gases involved, a permeable membrane that allows for the passage of gases, and a surface area large enough to facilitate the diffusion of gases. Additionally, a mechanism such as diffusion or active transport is necessary to facilitate the movement of gases across the membrane.
it allows us to breath This system allow for gas exchange in the lungs. These gases are mostly oxygen and carbon dioxide.
Gases can easily pass across the wall of an alveolus due to its thin and moist membrane that allows for rapid diffusion of oxygen and carbon dioxide. Additionally, the large surface area of alveoli allows for efficient exchange of gases between the lungs and bloodstream.