Question: is it true that when the lungs of a frog are extracted ,the frog can still carry out gaseous exchange? and why

Diana Nyabundi answered on 28 May 2019:

A frog carries out gaseous exchange through three main surfaces: the skin, the lining in the mouth cavity and the lungs. When the frog is in water the main surface used is the skin which is quite thin and has many blood vessels that allow gaseous exchange to take place. When on land the main surface that is used is the lining of the mouth cavity which is the most common surface when it uses when resting. Respiration can occur through the lungs but since frogs don’t have a diaphragm and ribs that allow humans to allow for gaseous exchange the mechanism is different. Their nostrils open and the floor of the mouth lining drops allowing oxygen to get into the enlarged mouth, the nostrils then close and the air is forced to the lungs. It is only adults that have lungs and they are not fully developed.