Biology 20 Final Exam | 294 Questions and Answers(A+ Solution guide)

Neutrophils - White blood Cell (granulocyte), sphirical, multilobed nuceli, granulated, 10-14 um Basophils - White Blood Cell (granulocyte), sphirical, lobed nuclei, irregularly shaped, release histamine, promotes blood flow to injury, granulated, 10-12 um, nucleus fills whole cell Eosinophils - White Blood Cell (granulocyte), sphirical, bilobed nuceli, granulated, 10-14 um, phagocytize antigen - antibody complexes Monocytes - White Blood Cell, Can leave blood stream, further specialize as macrophages that destroy bacteria, kidney shaped nuclei, nongranular Lymphocytes - White Blood Cell, non granular, thymus and red bone marrow, play role in the formation of antibodies(defense function) Plasma - Fluid portion of the blood, made up of water plus dissolved gases, proteins, sugars, vitamins, minerals, hormones, waste products. Transports blood cells, oxygen, carbon dioxide, etc. Red Blood Cell - (Erythrocyte) Blood cell that contains the respiratory protein hemoglobin and is specialized for oxygen transport, no nucleus (formed part of blood) White Blood Cell - (leukocyte) Colorless blood cell that protects the body from infection by way of the immune response, plays a role in allergic reactions and inflammation. Three types: granulocytes, monocytes, lymphocytes (formed part of blood) Platelet - Component of the formed portion of the blood, consisting of fragments of cells that are created when larger cells in the bone marrow break apart, contains no nucleus and plays a key role in blood clotting Vasodilation - Expansion in the diameter of blood vessels; near the skin brings more blood to the surface to reduce body temperatureVasoconstriction - Decrease in the diameter of blood vessels; near the skin conserves body heat Atrioventricular (AV) node - Bundle of specialized muscle tissue located int he wall of the right atrium; receives electrical stimulus from the SA nose and transmits this impulse over the walls of the ventricles to start their contraction