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.
1 The percentage of hemoglobin that is carrying oxygen. 2  Hemoglobin is the protein in red bloods cells that carries oxygen through blood vessels to tissues throughout the body. 3  O 2 content (O 2 CT or C a O 2). 4  The amount of oxygen per 100 mL of blood. 5  Bicarbonate (HCO 3 -).