it occurs somewhere in the lungs. sorry, i cant get anymore specific than that. sorry, though. :o(
RESPIRATORY
Ericaemily8's improved answer (instead of her's) (The one above mine is someone elses):
It happens at the capillaries, the red blood cells carry the Carbon Dioxide to the capillaries which dispose of it in the human body, that is why you have gas. The capillaries which had oxygen to start with then give the oxygen to the red blood cells which carry it all around your body, mostly your heart.
Actually, no. See, the heart is in charge if pumping oxygen rich blood out and oxygen poor blood in, so it can make the quality of the blood good enough to be sent through the body. The exchange of oxygen and carbon dioxide mainly occurs at the lungs.
It's because a process called gas exchange has taken place in the fish's body. Oxygenated blood is pumped throughout the body, and the cells in the body take out oxygen and put in carbon dioxide (gas exchange). The blood returning to the heart of the fish is deoxygenated, and it will have to eventually go to the gills. There, the carbon dioxide (CO2) will get dumped into the water and oxygen (O2) will be picked up from the water at the same time in another gas exchange.
The blood carries carbon dioxide back to the lungs and oxygen out of it
it is blood that is rich in carbon dioxide rather than oxygen on the way back to the heart . the oxygen has been delivered to the body and carbon dioxide has replaced the oxygen. Blood that has released its oxygen. It is dark red in color with a tinge of blue. It is a common misconception that deoxygenated blood is blue. Oxygen bonds to hemoglobin in the blood cells and is transported to where it is needed in the body where it exchanges with carbon dioxide. Deoxygenated blood is found in veins and in the pulmonary artery.
Here is how it works.You breathe in oxygen, the blood around your lungs picks up that oxygen and goes to your heart (left part) which pumps it to your entire body.As the blood gives oxygen to your tissues, your tissues give carbon dioxide in return because it is a waste product that you need to get rid of.This blood then returns to your heart (the right part) so that it would be pumped back to the lungs where it gives off the carbon dioxide (which is exhaled by your lungs) and takes a new dose of oxygen so the cycle begins again.Therefore your heart functions in 2 ways simultaneously, it pumps blood that has oxygen to your body, and blood that has no oxygen (but has carbon dioxide) to your lungs.
Arteries carry blood away from the heart and veins carry blood into the heart. Blood moving from the heart to the lungs through the pulmonary artery has less oxygen than blood moving from the lungs to the heart through the pulmonary vein, but most arteries carry oxygen-rich blood with little carbon dioxide, and most veins carry deoxygenated blood with carbon dioxide and other wastes.
Exchange carbon dioxide and oxygen
They exchange water, oxygen and carbon dioxide, as well as nutrient and waste chemical substances between blood and surrounding tissues.
oxygen and carbon dioxide. oxygen is delivered by the blood into the cell and oxygen from the cell is is given to the blood in exchange to be expelled by the lungs.
the lungs
Oxygen and Carbon Dioxide.
The primary function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygenenters the lungs and reaches the alveoli. Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
That is a natural physiological process that occurs in the lungs. It is usually referred to as gas exchange, where the blood is enriched with oxygen as it looses most of its load of carbon dioxide.
The tiny air sacs of the lungs were oxygen and carbon dioxide are exchanged are the alveoli.
It is carbon dioxide which is collected from different organs of the body by blood
Venous blood is loaded with carbon dioxide and low in oxygen Arterial blood is rich in oxygen with little carbon dioxide
Capillaries are the thin-walled vessels that allow oxygen and carbon dioxide exchange. Their thin walls make it easy for gases to diffuse across the membranes.
No. It depends on the concentration of carbon dioxide in the alveoli and the blood. The concentration of carbon dioxide in the capillaries of the alveoli is higher than the concentration of carbon dioxide in the air, so carbon dioxide in the capillaries of the alveoli diffuses out of the capillaries into the alveoli of the lungs and is exhaled.