When the lungs do not function the backup respiratory system takes over the function of the lungs. This is true in a fetal pig.
The placenta. Deoxygenated blood flows to the placenta where the carbon dioxide is removed and oxygen added. Oxygen rich blood returns to the fetus. Blood is carried to and from the fetus by the umbilical cord.
No, the diaphragm does not function in a pig fetus. The pig fetus has no need to breathe prior to birth, it receives oxygen through the umbilical cord.
The blood is taken to the lungs to get oxygenated and then distribute O2 all over the body
The fetal circulation is based mainly on the veinous circulation during pregnancy. Once the uterine connections are lost, the adult circulation takes over.
This serosa covers the thorax cavity, the heart, and the lungs. It gives the lungs a libricant, allowing them to move easily over the thorax wall.
The period of trigonometric function is the distance between repetitions of the function. The "x" value of the space it takes to start over.
The parietalpleura lubricates the pleura so that they move over each other easily. This helps the lungs breathe in and out.
Cilia are present all over the bronchial tree. Cilia propel the foreign particles out wards.
It's when you invite your girlfriend over to dinner and light a beautiful candle lit dinner then slit her throat and sacrifice her to the dark lord while chanting a latin ritual, then jizz all over her face as she gets sacrificed to satan
the vice president takes over until further notice
The nictitating membrane.
Lungs are what air breathing creatures use. That is how they evolved. Gills need to have water flowing over them so they work in water. So Lungs won't work in water and Gills won't work in air.