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
Their lungs and diaphragm
By the blood circulation.
The brain stem.
The diaphragm helps you breathe in and out but breathing is an involuntary action
Your body absorbs some of the oxygen out of air in your lungs
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)
It enter when you breathe. You let go of Carbon in your body when you breathe out, and let fresh air or oxygen enter your body when you breathe in.