These 10 facts about space will blow your mind. A shoulder cord is a military decoration which is worn on the shoulder. It may loop around the shoulder under the armpit, rest on the shoulder of the uniform, or attach to a point on the front of the uniform, depending on the design.
Methemoglobinemia is a condition in which more than 1% of the hemoglobin in red blood cells takes the form of methemoglobin. Methemoglobulin is an abnormal form of hemoglobin (the molecule responsible for carrying oxygen in the blood cells) that is unable to bind to oxygen. A small amount of methemoglobin is normal (less than 1% of hemoglobin).
In humans, each red blood cell carries about 250,000 molecules of hemoglobin which can transport both oxygen and carbon dioxide. Hemoglobin is a molecule made of two separate components: the protein globin and the nonprotein heme groups.Heme belongs to a group of molecules classified as porphyrins.n humans, each red blood cell carries about 250,000 molecules of hemoglobin which can transport both oxygen and carbon dioxide. Hemoglobin is a molecule made of two separate components: the protein globin and the nonprotein heme groups.