Navigation Links
Pseudopod


Pseudopods or pseudopodia (false feet) are temporary projections of eukaryotic cells. Cells having this faculty are generally referred to as amoeboids.

Contents

Formation

First, the cell surface extends a membrane process, named lamellipodium. Polymerization of actin takes place and form filaments at the leading edge, which subsequently will blend into one another to form networks. We suppose that actin polymerization is at the origine of the force propelling the cell forwards.

Function

They are involved in a variety of cell activities, most notably:

Mechanical role

Pseudopods are one of the three locomotion modes of unicellular organisms (together with flagella and cilia).

Sensory role

Pseudopods also capture prey phagocytosis. Phagocytosis pseudopods have arisen in a number of different protist groups, but also in some cells (phagocytes) in multicellular organisms.

Morphology

Pseudopods can be classified into several varieties according to their appearance:

Lobopodia are bulbous, short and blunt in form, very typical of amoeba species.

Filopodia are more slender and filiform with pointed ends, consisting mainly of ectoplasm. These formations are supported by microfilaments.

Axopodia, observed mainly at radiolarians, are thin pseudopods contain complex arrays of microtubules and are enveloped by cytoplasm. Axopodia are responsible for phagocytosis, by rapidly retracting in response to physical contacts.

Reticulopodia, also known as reticulose pseudopods, are complex formations where individual pseudopods are blended together and form irregular nets.


'"/>


(Date:11/15/2016)... Md. , Nov. 15, 2016  Synthetic ... company developing therapeutics focused on the gut microbiome, ... offering of 25,000,000 shares of its common stock ... common stock at a price to the public ... proceeds to Synthetic Biologics from the offering, excluding ...
(Date:6/27/2016)... DUBLIN , June 27, 2016 Research ... in North America 2016-2020" report to their offering. ... North America to grow at a CAGR ... has been prepared based on an in-depth market analysis with inputs ... growth prospects over the coming years. The report also includes a ...
(Date:6/21/2016)... VANCOUVER, British Columbia , June 21, 2016 ... been appointed to the new role of principal ... has been named the director of customer development. ... , NuData,s chief technical officer. The moves reflect ... development teams in response to high customer demand ...
Breaking Biology News(10 mins):
Other biology definition