EMBRYOLOGY
RESPIRATORY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Skin
|
|
|
Lungs
|
|
|
Gills
|
|
|
None of the above
|
Detailed explanation-1: -The frog has three respiratory surfaces on its body that it uses to exchange gas with the surroundings: the skin, in the lungs and on the lining of the mouth. While completely submerged all of the frog’s repiration takes place through the skin.
Detailed explanation-2: -Other animals, such as earthworms and amphibians, use their skin (integument) as a respiratory organ. A dense network of capillaries lies just below the skin, facilitating gas exchange between the external environment and the circulatory system.
Detailed explanation-3: -Respiratory System Larval amphibians breathe primarily through gills. Adults can retain and use gills, lose gills and develop lungs, breathe with both gills and lungs, or have neither (Fig. 8).