A muscle called the Diaphragm
It makes you breathe
Pulmonary fibrosis is the creation of excess fibrous tissue (scar tissue) in the lungs. Because scar tissue is thick and stiff, it makes it more difficult to breathe and makes it more difficult for your body to absorb oxygen through your lungs when you breathe.
It helps u breathe
their gills
Lungs
The brain stem.
Their lungs and diaphragm
By the blood circulation.
The diaphragm helps you breathe in and out but breathing is an involuntary action
You breathe in oxygen and breathe out carbon dioxide. Inhaling brings oxygen into your lungs, which is then absorbed by your blood for use by your body's cells. The carbon dioxide produced by your cells is carried back to your lungs and exhaled out of your body.
snakes. The body of the snakes are covered with scales and breathe through lungs
Although tadpoles breathe from gills, the gills start to disappear and lungs start to form in the frog's body. So that means that frogs breathe through lungs.(So does toads)