The calories in one teaspoon of sugar can vary slightly depending on the manufacture of the spoon, but also on how much you scoop up. Using a measuring spoon would be a good way to get the exact quantity of sugar a teaspoon actually has, which is particularly useful when you are baking.
Blood becomes oxygenated through the process of diffusion in the lungs, more specifically referred to as gas exchange. It is a passive process so that means that many capillaries need to be in close contact with the air that we inspire. In fact the most intimate contact we have with the external world is in our lungs.he veins lead the de-oxygenated blood back to the heart, where  it goes through the right atrium, right ventricle, and through the  Pulmonary Arteries to the lungs, where g â¦ as exchange happens.
You can see from the diagram that there are two main arteries connected to the heart. The aorta carries oxygenated blood to the body. The pulmonary artery carries deoxygenated blood to the lungs and it is the only artery to carry deoxygenated blood.There are two veins associated with the heart. The vena cava, or great vein, carries deoxygenated blood back to the heart from the body.ou can see from the diagram that there are two main arteries connected to the heart. The aorta carries oxygenated blood to the body. The pulmonary artery carries deoxygenated blood to the lungs and it is the only artery to carry deoxygenated blood.