A Speech to Be Delivered to the Parents Teachers Association the Causes of Student Unrest and Suggest How It Can Be Prevented

Composition of Blood Blood contains a nonliving fluid hyaloplasm (plasma) in which living cells (formed elements) are suspended. Blood contains 55% plasma and 45% formed elements. Plasma is over 90% water. It also contains electrolytes (salts), plasma proteins, and substances transported by crosscurrent (i. e. nutrients, hormones, etc. ). The three types of formed elements are erythrocytes (RBCs), leukocytes (WBCs), and platelets FUNCTIONS OF BLOOD functionsof the consanguinityare o transportoxygenaway from the lungs and around the tree trunk andCO2from the body cells to the lungs. to transportnutrientssuch as glucose and amino acids from the digestive system to the cells in our bodies. to take awaywaste productssuch as lactic acid away from the muscles when its produced by anaerobic respiration and urea from the colorful to the kidneys and bladder. By maintaining a good circulation, the bloodflow keeps your core bodytemperature BLOOD DISEASES lood disease, each disease of thebl ood, involving the red blood cells erythrocytes, white blood cells leukocytes, orplatelets(thrombocytes) or the tissues in which these elements are formedthebone marrow,lymph nodes, andspleen or of release and blood clotting. Long before the nature and composition of blood were known, a variety of symptoms were attributed to disordered blood. Red blood cells were not recognized until the seventeenth century, and it was another 100 years before one of the types of white blood cells, thelymphocyte, and the clotting of blood (coagulation) were expound.In the 19th century other forms of leukocytes were discovered, and a function of diseases of the blood and blood-forming organs were distinguished. Morphological changesthe changes in form and structurethat take place in the blood during disease and the signs and symptoms of the various blood diseases were described in the 19th century and the first quarter of the 20th century. In the years that followed, a more physiological approach b egan to develop, concerned with the mechanisms vestigial the development of blood disease and with the ways in which abnormalities might be corrected.