Blood and Lymph. Components of Blood Plasma Cells—RBC’s, WBC’s, Platelets Production and elimination of blood cells WBC’s move in and out of blood Role of lymph vessels Lymph organs. Components of blood—plasma. Plasma is water with dissolved solutes 46-63% of blood volume is plasma
One drop of blood has 250 million RBC’s
Adult human has total of 25 trillion RBC’s—1/3 of all cells in the body
Each RBC lives about 120 days and travels 700 miles. Membrane rupture or other damage is noticed by phagocytes which then engulf the cell
One percent of RBC’s are replaced each day at a rate of about 3 million per second
Each RBC contains about 250 million Hb molecules
So, number of Hb molecules in body is about equal to stars in the universe
More on immunity coming up…but how do these immune cells (WBC’s) move around the body?