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Endocytosis - Definition


Endocytosis is the mechanism that allows molecules to penetrate certain types of cells. Absorption endocytosis is the specific entry of molecules in the cell membrane and the release of these substances inside the cell in a vesicle. There are two other ways for molecules to penetrate a cell: pinocytosis, which is the entry of dissolved molecules in liquid form in a cell; and phagocytosis, which is a defense mechanism of the body involving the incorporation of bacteria or solid cell debris which will be "digested" by the cell. White blood cells come into cooperation with phagocytes, the cells that perform phagocytosis, to specifically destroy the molecules involved.