Phagocytosis

Phagocytosis - of microbial particles(Figure 1 into a...

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Phagocytosis Phagocytosis is a nonspecific defense mechanism in which various phagocytes engulf  and destroy the microorganisms of disease. Phagocytes.  Among the important phagocytes are the circulating white blood cells  called  neutrophils  and  monocytes.  In the tissues, the monocytes are transformed into  phagocytic cells called  macrophages.  The macrophages move through the tissues of  the body performing phagocytosis and destroying parasites. They are part of the  reticuloendothelial system.  Phagocytes also initiate the processes of the immune  system.  The process of phagocytosis begins with  attachment  and  ingestion
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Unformatted text preview: of microbial particles (Figure 1 ) into a bubblelike organelle called a phagosome. Once inside the phagocyte, the phagosome containing the microorganism joins with a lysosome , which contributes enzymes. The fusion of phagosome and lysosome results in a phagolysosome. Microorganisms are destroyed within minutes, and the microbial debris is eliminated from the cell in the process of egestion. In the immune process, chemical portions of the microorganism called antigenic determinants are displayed on the surface of the phagocyte to stimulate the immune process....
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This note was uploaded on 11/11/2011 for the course BIO 101 taught by Professor Pesthy during the Fall '07 term at Texas State.

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