Young Amphibians Breathe With
Amphibians have evolved multiple ways of breathing.
Young amphibians breathe with. In the case of frogs and toads tadpoles have internalized gills covered by skin forming an opercular chamber with internal gills ventilated by spiracles. The living amphibians frogs toads salamanders and caecilians depend on aquatic respiration to a degree that varies with species stage of development temperature and season. Most amphibians breathe through lungs and their skin.
Reptile and bird embryos have membranes on the inside of the shell which are rich in blood vessels these are the blood vessels one can see when candling an egg. 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. Amphibians have evolved multiple ways of breathing.
But as a baby amphibian grows up it undergoes metamorphosis a dramatic body change. Most amphibians breathe through lungs and their skin. Likewise how do amphibians breathe.
These lungs are primitive and not as evolved as mammalian lungs. There are lungless salamanders that have neither lungs nor gills They just breathe through their skin. Many young amphibians also have feathery gills to extract oxygen from water but later lose these and develop lungs.
With some amphibians it appears that they can breathe underwater when in fact they are holding their breath. With some amphibians it appears that they can breathe underwater when in fact they are holding their breath. Fish breathe using gills while juvenile amphibians breathe using gills and spiracles.
Later their bodies go through a huge change called metamorphosis. Do amphibians breathe through lungs. They can now breathe air on land.
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