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A pseudopodium or pseudopod (plural: pseudopodia or pseudopods) is a temporary cytoplasmic extension of an amoeboid cell, used for locomotion and ingestion of food. The name means literally ‘false foot’. Pseudopodia are powered by microfilaments near the cellular membrane. About half of the internal space of an amoeba contains microfilaments. A pseudopodium contains both granuloplasm and hyaloplasm. Pseudopodia which only contain hyaloplasm are called subpseudopodia. Morphologically, pseudopodia can be assigned to one of four types: filopodia, lobopodia, rhizopodia, and axopodia. Lobopodia (Fig. 3.8), the most common form among parasitic amoebae, are blunt and may be composed of both ectoplasm and endoplasm or of ectoplasm only. In most species, lobopodia form slowly. Observation of living specimens clearly shows the gradual flow of granular endoplasm, when present, into the broad projection. Entamoeba histolytica, an important parasite of the human ... Pseudopodia are temporary projections of the cell membrane that help in movement and feeding. Learn about the different types of pseudopodia, their formation mechanism, and their roles in amoeboid movement and immune response. Learn how cells use pseudopodia, or false feet, to move across surfaces and through mediums. Explore the process, mechanisms, and structures of pseudopodial locomotion in different organisms and cells.
