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Which of the following forms the floor of the chest cavity?
In the given figure, diaphragm is represented by
What happens to the lime water, when we exhale air into it?
Which of the following animals breathe through their skin and lungs?
Fishes use a specialized organ called gills to breathe. They use the oxygen dissolved in water. Some animals which live on land have skin which is so thin that gases can easily pass through it. For example, Earthworms and amphibians have a skin which is permeable to gases. Earthworms do not have lungs and breathe only through their skin. Most amphibians breathe through both skin and lungs. The frog is an amphibian. So, the answer is c.
In fishes gills are the respiratory organs, gills are projections of which of the following parts?
Which of the following statements is not correct?
The function of hair follicles inside the nose is
In man, nasal and oral cavities are separated by