McDonald's Airport Toys. While on the surface it sounds like a good idea: get an airplane as a toy and turn your Happy Meal box into the airport. However, when our clown-faced friend unveiled what has come to be known as the cheapest McDonald's toy of all time, kids were not excited.
Oxygen is carried in the blood in two forms: (1) dissolved in plasma and RBC water (about 2% of the total) and (2) reversibly bound to hemoglobin (about 98% of the total). At physiological PO2 (40 &#60; PO2 &#60; 100 mm Hg), only a small amount of oxygen is dissolved in plasma since oxygen has such a low solubility.
Key Concept The pulmonary arteries are the only arteries in the body that carry deoxygenated blood. The pulmonary veins are the only veins that carry oxygenated blood. The oxygen saturation of the hemoglobin within the arteries is normally about 95%-I00%.ey Concept The pulmonary arteries are the only arteries in the body that carry deoxygenated blood. The pulmonary veins are the only veins that carry oxygenated blood. The oxygen saturation of the hemoglobin within the arteries is normally about 95%-I00%.