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In this lecture ´´Resistance of Body to Infection´´ is explained. Section one is about ‘‘Leukocytes’’. Earlier in this section Defences Against Infection is discussed. After that leukocytes (white blood cells) are reported. Then general characteristics of leukocytes are explained. Moreover, concentrations of the different white blood cells are presented. Subsequently, lineage of white blood cells is elucidated. This is followed by genesis of white blood cells. Lastly, life span of white blood cells is pursued.
Neutrophils and Macrophages Against Infections
Section two is about ‘’Neutrophils and Macrophages Against Infections’’. At first educator gives a comprehensive explanation of neutrophils and macrophages. Then Functions of white blood cells against infection are reported. In the next slide, the process of phagocytosis is briefly explained. This is followed by phagocytosis by neutrophils. Next focus is the elucidation of phagocytosis by macrophages. Moving onward, information on fate of digested particles is given. In the end, educator tells that how neutrophils and macrophages kill bacteria.
Monocyte-Macrophage Cell System
Section three is about ‘’Monocyte-Macrophage Cell System’’. Educator explains reticuloendothelial system. Next focus is the elucidation of tissue macrophages in the skin and subcutaneous tissues. Then macrophages in the lymph nodes are illustrated. Likewise, alveolar macrophages in the lungs are discussed. Following this, macrophages (Kupffer cells) in the liver sinusoids comes under consideration. Lastly, educator sheds light on macrophages of the spleen and bone marrow.
Section four is about ‘’Inflammation’’. First of all, educator gives a definition of inflammation. After that characteristics of inflammation are discussed briefly. Then “Walling-Off” effect of inflammation is elaborated. Next focus is the first line of defense. This is followed by second line of defense -neutrophil invasion. Afterwards, third line of defense is pursued. Moreover, fourth line of defense is discussed. Likewise, discussion continues on feedback control. At last, educator tells that how formation of pus takes place.
Clinical Manifestations of Leukocytes
Section five is about ‘’Clinical Manifestations of Leukocytes’’. In the beginning of this section, eosinophils are explained. After that basophils are demonstrated. Then leukopenia is reported. Following this, educator tells what are leukemias. Subsequently, types of leukemias are highlighted. Finally, effects of leukemia on the body are elucidated.