Amphibians
frogs use their skin for their respiration (since it is filled with capillaries). For most amphibians, 90% of their respiration is done through their skin. Frogs can also breath through the lining in their mouth which also contains capillaries, so a large amount of gas exchange can take place there. Frogs are able to breath through a pair of lungs as well, though this is used as more of a back up.
Frogs respire through a combination of lungs and skin. They absorb oxygen through their skin when underwater and use their lungs when on land. They rely more on their skin for respiration when submerged.
Skin plays a minor role in respiration by allowing a small amount of gas exchange to occur through diffusion. However, the majority of oxygen and carbon dioxide exchange in humans occurs through the respiratory system, specifically in the lungs. The skin is not the primary organ involved in respiration.
A frog is an amphibian, but adult frogs do not have gills. They absorb oxygen from the water through their skins, using special blood vessels. If the oxygen level in water is too low, frogs will move around to increase the water flow across the skin. Some frogs have creased skins that can increase their surface area. (see related question)
In animals that rely on skin for respiration, the skin must be moist. This moisture helps facilitate gas exchange by allowing oxygen and carbon dioxide to diffuse through the skin. Dry skin would impede this process.
Lungs and moist skin.
This process of molecular exchange is called transpiration.
Respiration in the earthworm is fairly simple. The earthworm has moist skin and it respires through the skin surface by taking in oxygen and giving out carbon di-oxide.
Respiration of animals in the Phylum Vertebrata, Class Amphibia, including classes such as urodela, anurans, & apodans. It involves respiration through the skin.
It is how animals respire, or breathe. We humans respire with lungs. Not all animals have lungs. For example, fish have gills, which they use to respire. Frogs breathe through their skin. All mammals (animals with hair) have lungs though, so they breathe like we do.
A frog can breath through its skin.
No. Reptiles breath through lungs.Reptiles have keratinized skin.This is impermeable. So they do not use skin