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Respiratory organ of adult frog

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    Respiration -- the exchange of gases between an organism and its environment -- in adult frogs can occur in three different ways, either independently or in tandem. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths. At the larval stage of their development, frogs lack functional lungs but are able to take in oxygen through a set of gills. All frogs go through a process called metamorphosis, in which they mature from their larval, or tadpole, stage into adult frogs. One of the hallmarks of this process for most frog species is the transition from having gills to having functional lungs.
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    Three Ways That Respiration Occurs in the Frog

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    Cutaneous Respiration In Frog.

    Metamorphosis is remarkable. A fish-like tadpole remodelling itself into a land-dwelling frog is a process so bizarre and fascinating that it continues to inspire the hoarding of containers of frog spawn for eyewitness accounts. One of the most dramatic changes during metamorphosis is the change from water breathing in tadpoles to air breathing in frogs. Living things must exchange gases usually oxygen and carbon dioxide for survival. Oxygen is needed by the body for cellular metabolism and carbon dioxide is produced as a waste product.
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    Respiration in a Frog vs. a Tadpole

    Frogs and humans have many comparable body systems, including the respiratory system. Both use their lungs to take in oxygen and expel waste gasses like carbon dioxide. There are differences in the way they breathe, and in the way frogs supplement their oxygen intake through their skin.
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    Tadpoles hatch from frogs' eggs and can only survive in water. As they undergo metamorphosis to become adult frogs they change in many ways, losing their swimming tails and developing legs. Both need to take in oxygen from their environment, and the way they respire also changes as they develop. Tadpoles use gills, while mature frogs have three types of respiration.
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