Mediastinum. That is the cavity that contains the heart.
Mediastinal space
The bronchi are the tubes that actually carry the air to the lungs, they have a different function than the alveoli which function in the process for gas exchange.
Lungs
The pleura: two thin membranes (visceral and parietal) separated by a fluid, that protect and cushion the lungs.
Lungs and heart are both located inside the rib cage where as the brain is inside the skull. The brain's blood supply is separated by the blood-brain barrier. Lungs are surrounded by pleural cavity
The pleura: two thin membranes (visceral and parietal) separated by a fluid, that protect and cushion the lungs.
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oxygen is carried by the red blood cells, but carbon dioxide is separated from the air you breathe in the lungs, then exhaled.
the rib cage has gabs between the so every bone is separated this creates a cage that protects the lungs and heart organ..
In the air sacs oxygen and other gases are stored and separated to be put into the blood stream.
They are separated by the DIAPHRAGM - the thin, elastic muscle sheet that pulls downwards so that your lungs will pull air inwards.
You have blood and air, very close to each other in alveolus of the lungs. They are separated by single flat epithelium of the capillary on one hand and single flat epithelium of the alveolus on another hand. Interestingly, the surface area of this transfer is about 1000 square feet.
Heart has two sides (4chambers) separated by a septum.One side it collects the impure blood ie from all the parts of our body and pumps it to lungs. At lungs through alveoli the co2 diffuses out and oxygen enters the blood. this pure blood (oxygenated blood) enters the other side of heart from where it is pumped to all body parts AND cycle continues.