Essay on Blood
Uploaded by richb1ch on Jan 13, 2008
{INTRODUCTION}
This essay is about blood transfusion, and blood types. Blood is a combination of biological fluid which contains of red blood cells, white blood cells and the fluid known as blood plasma. Red blood cells are the most common type of blood cell and the main objective is delivering oxygen from the lungs to all the organs in your body. White blood cells are cells which defend the body against infectious, disease, viruses and foreign materials. Blood transfusion is the process of transferring blood or blood based products from one person into another person.
{RED BLOOD CELLS}
The red blood cells are extremely important to the body. The body relies on red blood cells to deliver oxygen to brain tissue, muscle tissue, and all of your organs. Oxygen to your body is like fuel to a car, with out fuel the car will shut down. And the same thing will happen to your body; but with a more fatal result. Un-oxygenated blood becomes darker and looks more purplish than it dues red.
{WHITE BLOOL CELLS}
The white blood cells play a whole different part in your biological makeup. They are not able to carry oxygen like the red blood cells, but they defend your body agents various threats. You have different types of white blood cells also called Neutrophil, Eosinophil, Basophil, Lymphocyte, Monocyte, and Macrophage. These white blood cells protect your body in differently from each other.
Neutrophils: deal with defense against bacterial or fungal infection and other very small inflammatory processes and are usually first responders to microbial infection.
Eosinophils: primarily deal with parasitic infections and an increase in them may indicate such.
Basophils: are chiefly responsible for allergic and antigen response by releasing the chemical histamine causing inflammation.
Lymphocytes: are much more common in the lymphatic system. The blood has three types of lymphocytes.
Monocytes: share the "vacuum cleaner" (phagocytosis) function of neutrophils, but are much longer lived than the neutrophils.
Macrophage: are able to develop into the professional phagocytosing macrophage cell after they migrate from the bloodstream into the tissue and undergo differentiation.
{BLOOD TRANSFUSION}
Blood transfusion is a treatment to replace blood (export and import blood from two or more bodies) of the blood lost through injury and surgery. It is needed if you have had significant blood loss or if your body cannot make or is losing an important amount of blood. A person can donate up to one pint of blood at a time. The donor...