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PowerPoint PresentationReview…Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8The CIRCULATORY system…Definition… (examine it critically)Slide 11“Formed elements” = cellsGranulocytes are: neutrophils, eosinophils, & basophils Agranulocytes are: lymphocytes & monocytes“THE CENTRAL CELL OF THE IMMUNE SYSTEM IS THE LYMPHOCYTE, WHICH ACCOUNTS FOR ROUGHLY 25% OF WHITE BLOOD CELLS IN THE BLOOD AND 99% OF THE CELLS IN THE LYMPH.”Slide 15Note these equivalencies…OK… that’s who the cells are… But where do they originate?http://www.nih.gov/news/stemcell/primer.htmSlide 19StimuliWhere do the cells go?IMMUNOLOGYBios 328a textbook-based study of immunologySpring 2003http://www.lehigh.edu/~sk08/Courses/Bios328/mainpage.htmReview…Let’s look at…•Figure 1-8•Figure 1-13•Figure 1-9•Figure1-10The CIRCULATORY system…•“Closed”… an understanding achieved by William Harvey in the seventeenth century.•Circulates blood.•Blood is a tissue.•What is a tissue, what is in this tissue, and how do we know?Definition… (examine it criticall y)•Blood: the fluid that circulates in the heart, arteries, capillaries, and veins of a vertebrate animal carrying nourishment and oxygen to and bringing away waste products from all parts of the body•Lymph: a pale, coagulable fluid that bathes the tissues, passes into lymphatic channels and ducts, is discharged into the blood by way of the thoracic duct, and consists of liquid portion resembling blood plasma and containing white blood cells but normally no red blood cells.•Plasma: the fluid part of blood or lymph as distinguished from suspended material•Serum: The watery portion of an animal fluid remaining after coagulation.“Formed elements” = cells•There are two types of cells: •red blood cells (or erythrocytes) •white blood cells (or leukocytes)–There are two types of leukocytes:»Granulocytes (70%)»Agranuloctyes (30%)Granulocytes are: neutrophils, eosinophils, & basophilsAgranulocytes are:lymphocytes & monocytes“THE CENTRAL CELL OF THE IMMUNE SYSTEM IS THE LYMPHOCYTE, WHICH ACCOUNTS FOR ROUGHLY 25% OF WHITE BLOOD CELLS IN THE BLOOD AND 99% OF THE CELLS IN THE LYMPH.”•An average sized, adult, human male has about 6 quarts (5.6 liters) of blood.•RBC: about 4.5 - 6 x 106 / cubic millimeter; exchange O2 and CO2; develop in bone marrow; 120 day life time; destroyed in spleen...• leukocytes: about 5,000 - 10,000/ cubic millimeter; (the number increases with infection)•leukemia: an extraordinary and prolonged proliferation of leukocytes; usually fatal... •leukopenia: a sharp decrease in number of leukocytes; also fatal due to a loss of defense...Note these equivalencies…1 liter = 1000 cubic centimeters = 1000 milliliters1 milliliter = 1 cubic centimeter1 milliliter = 1000 cubic millimeters1 microliter = 1 cubic millimeterOK… that’s who the cells are…But where do they originate?http://www.nih.gov/news/stemcell/primer.htmStimuli•Multi Lineage Colony Stimulating Factor (Multi-CSF) a.k.a. IL-3 (interleukin-3)•Granulocyte-Macrophage Stimulating Factor (GM-CSF)•Macrophage Colony Stimulating Factor (M-CSF)•Granulocyte Colony Stimulating Factor (G-CSF)•ErythroPOietin (EPO)Where do the cells


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LEHIGH BIOS 328 - IMMUNOLOGY

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