BIOL 2160 Chapter : Physio Chapter 15 Blood Notes
Document Summary
Overview of blood: blood = vehicle for transport, average blood volume. Bun: erythrocytes rbcs red blood cells, transports oxygen and carbon dioxide, leukocytes wbcs white blood cells, defend body against pathogens, platelets cell fragments, important in blood clotting, plasma fluid and solutes. Measuring the hematocrit: centrifuge blood sample, measure components as % by volume. Plasma: straw-colored liquid, consists of h20 and dissolved solutes, ions, metabolites, hormones, antibodies, relatively low concentrations of h+, hco3, wastes: urea, bilirubin, creatinine. Carries oxygen: 98. 5% oxygen bound to hb, 1. 5% dissolved in plasma. Clinical focus: anemia get notes from clinical connections page 442. Leukocytes: contain nuclei and mitochondria, move in amoeboid fashion. Can squeeze through capillary walls: almost invisible; named after stains, involved in immune function, leukopoiesis: Phagocytosis of debris from dead or injured cells. New monocytes circulate: phagocytize bacteria, dead cells, and other debris. Lymphocytes: slightly larger, t cells and b cells.
