The respiratory system and the circulatory system
External like of amphibians and internal like of mamals
Amphibians use their lungs, and use their thin skin when its moist.
Stomata
We know that reptiles have lungs, just like many other animals do.
Trachea, brochi, alveoli,lungs
Some Echinoderm starfish use the bumps and spines on their surface for respiration, and others use special thin areas of epidermis on the skin, called dermal gills or papulae, to exchange gases. Although, most Echinoderm sea stars generally lack proper respiratory systems and many only have rudimentary circulatory systems. The water vascular system is also really important in gas exchange.
Amphibians use their lungs, and use their thin skin when its moist.
the organ that is involved in gas exchange is the lung. the specific lung structure that is the site for gas exchange is the alveolus which is part of the alveoli, which is found in the lung.
it is the skin
The exchange surfaces are moist.
Stomata
Gas exchange
The adaptive value of having the organ of gas exchange inside the body is increased effectiveness. It allows for more rapid movement of air across the lungs.
the mantle is filled rather than emptied.
Working together, the respiratory and circulatory systems perform gas exchange from the blood to the lungs. This exchange occurs at the alveoli.
Insects.
Because that is where the primary gas exchange happens.
We know that reptiles have lungs, just like many other animals do.