ANATOMY

Detailed explanation-1: -The skin of frogs is also always moist because it is covered by a layer of mucus which causes the respiratory gases to dissolve and diffuse easily. Under the layers of skin is a dense network of blood capillaries to increase the diffusion rate of gases between the skin and the blood capillaries.

Detailed explanation-2: -Most amphibians breathe through lungs and their skin. Their skin has to stay wet in order for them to absorb oxygen so they secrete mucous to keep their skin moist (If they get too dry, they cannot breathe and will die).

Detailed explanation-3: -Amphibians have unique skin compared to that of many other vertebrate animals. An amphibian’s skin is thinner, which allows for higher levels of oxygen to exchange with the blood vessels that are close to the surface of the skin.

Detailed explanation-4: -The respiratory organs in amphibians are gills, lungs, buccopharyngeal membrane and the skin. Gills: The gills are only specific for the tadpoles and few other amphibians, which possess gills that help them breathe under water.