90%
90% 😊
Inside the alveoli, oxygen moves across paper-thin walls to the capillaries (tiny blood vessels) and into the blood. It is then picked up by chemicals (haemoglobin) in the red blood cells that carry it around the body. At the same time, waste products from the body, in the form of carbon dioxide, come out of the capillaries back into the alveoli, ready to be breathed out. Freshly oxygenated blood is carried from the lungs to the left side of the heart which pumps blood around the body through the arteries. Once the oxygen has been used up, the blood returns, through the veins, to the right side of the heart. From there it is pumped to the lungs so that the carbon dioxide can be removed and more oxygen taken on board.
Oxygen is used and CO2 is produced.
its answer is oxygen because pyrogallol absorbs oxygen so used to measure amount of oxygen in any substance
oxygen is used for many things like in hospitals when people are having difficulties ti breath.
The oxygen isn't "used by the earth"; it is recycled by organisms. The total amount of oxygen on planet Earth remains more or less constant.
Oxygen
It is the heart that pumps fresh oxygen in the blood.
The main energy supply to the heart is oxygen supplied by the coronary arteries. For more information contactHeartquestionsanswerd@hotmail.co.uk To get ANY heart question answerd. Use this information as a guide only I am NOT a doctor but I know a lot about the heart.
the heart does not give the body it's oxygen it is the lungs. The heart is used to pump the blood to the lungs to pick up oxygen and then to pump the blood throughout the body and add oxygen to the blood cells.
oxygen is taken in and CO2 is released.
oxygen is taken in and CO2 is released.
The amount varies widely, depending upon factors such as the size of the individual and intensity of physical activity (for two).
We used more oxygen .
Oxygen was the first element used by humans the most prominent elements in the body are hydrogen OXYGEN nitrogen and carbon. You have probably heard that you body is made up of 65 percent water well you are also made up of 65 percent oxygen. I know that does not equal 100 percent but water is H2O which is hydrogen squared and Oxygen. Oxygen is in water. We need oxygen to live.
The heart sends "used" blood to your lungs so that the blood can reabsorb oxygen there. There are no weasels in the lungs.
Oxygen is taken in and glucose is used. Water, Carbon dioxide and energ are created.
Your muscles need oxygen to work and oxygen is carried through the blood, propelled by the heart. When you run, you use muscles and your heart beats faster to increase the amount of oxygen reaching the muscles being used.