referral. 1. A Pt who has been sentâreferredâfor a 2 nd opinion or therapy to a specialist or subspecialist with greater expertise, as the Pt has a disease or condition that the primary or referring physician cannot, or does not wish to, treat.See Second opinion.2.. A Pt who has been sentâreferredâfor a 2 nd opinion or therapy to a specialist or subspecialist with greater expertise, as the Pt has a disease or condition that the primary or referring physician cannot, or does not wish to, treat. See Second opinion.
Best Answer: Haemoglobin is a protein and all proteins contain the elements Nitrogen, Hydrogen, Carbon and Oxygen only but Haemoglobin also contains Iron.emoglobin or haemoglobin is the iron-containing oxygen-transport metalloprotein in the red cells of the blood in mammals and other animals. The molecule consists of globin, the apoprotein, and four haem groups, an organic molecule with an iron atom. Source(s): wikipedia. Ed F Â· 9 years ago.
The name hemoglobin comes from heme and globin, since each subunit of hemoglobin is a globular protein with an embedded heme (or haem) group. Each heme group contains an iron atom, and this is responsible for the binding of oxygen.The presence of hemoglobin in blood increases the oxygen carrying ability of a litre of blood from 5 to 250 ml. Hemoglobin also plays a major role in the transport of carbon dioxide from the tissues back to the lungs.he iron atom in heme binds to the 4 nitrogen atoms in the centre of the porphyrin ring, but this leaves two free bonding sites for the iron, one on either side of the heme plane. The heme group is located in a crevice in the myoglobin molecule, surrounded by non-polar residues except for two polar histidines.