ameboid movement

ameboid movement
movement characteristic of amebae and leukocytes by extension of the plasma membrane to form a balloonlike pseudopodium that attaches to the substrate and into which the cytosol flows, moving the cell forward. Movement is accompanied by cyclic changes in the viscosity of the cytosol that result from the assembly and severing of actin filaments, with the leading edge of the pseudopodium being a gel and the cytoplasm flowing into the pseudopod being a sol.

Medical dictionary. 2011.

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  • ameboid cell — any cell capable of ameboid movement; called also amebocyte and wandering c …   Medical dictionary

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  • Chemotaxis — is the phenomenon in which somatic cells, bacteria, and other single cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (for example, glucose) by …   Wikipedia

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  • streaming — See ameboid movement. * * * stream·ing strē miŋ n an act or instance of flowing specif CYCLOSIS * * * stream·ing (strēmґing) the movement of a current in a fluid …   Medical dictionary

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  • Asa Arthur Schaeffer — (* 9. Mai 1883 in Kunklestone, Pennsylvania; † 19. Dezember 1980 in Philadelphia) war ein amerikanischer Protozoologe, dessen Forschungsschwerpunkt auf der Erforschung der Taxonomie und des Verhaltens von Amöben lag. Inhaltsverzeichnis 1… …   Deutsch Wikipedia

  • leukocytotaxia — 1. The active ameboid movement of leukocytes, especially the neutrophilic granulocytes, either toward (positive l.) or away from (negative l.) certain microorganisms as well as various substances frequently formed in inflamed tissue. 2. The… …   Medical dictionary

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