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:6/24/2015)... Research and Markets( ... "Huawei Ascend Mate 7 Fingerprint Sensor - ... Huawei,s technological choice for the fingerprint ... Apple,s and Samsung,s one. The Ascend Mate 7 ... Cards, a main actor in capacitive sensing human ...
(Date:6/23/2015)... GARDENS, Fla. , June 23, 2015 ... identity management and authentication solutions, today announced enhanced ... strong, multi-factor authentication solution.  The enhancements build ... use of the DigitalPersona Altus platform and ... reader compatibility. In today,s environment ...
(Date:6/17/2015)... , June 17, 2015  Synaptics Inc. (NASDAQ: ... solutions, today announced that Xiaomi, one of the ... ® ClearPad ® family of capacitive ... integrated circuits (DDICs) for its latest smartphones, the ... ClearPad for full in-cell display solutions and DDICs ...
Breaking Biology News(10 mins):Huawei Ascend Mate 7 Fingerprint Sensor - Reverse Costing Analysis 2Crossmatch Releases Enhanced DigitalPersona Altus Advanced Authentication Functionality 2Synaptics Touchscreen and Display Driver IC Solutions Power Xiaomi's Latest Flagship Smartphones 2Synaptics Touchscreen and Display Driver IC Solutions Power Xiaomi's Latest Flagship Smartphones 3
... the RIKEN Center for Genomic Medicine, Hiroshima University Hospital ... associated with the development of liver cancer in chronic ... a study of 3,312 Japanese individuals and appear in ... (HCC), the most common type of liver cancer, is ...
... shown for the first time that the loudest animal on ... boatman, Micronecta scholtzi . At 99.2 decibels, this represents ... sitting in the front row. The frequency of the ... Dr. James Windmill of the University of Strathclyde, explains one ...
... quickly and accurately through dense forests may lead to new ... pigeons to fly through an artificial forest with a tiny ... "Attaching the camera to the bird as well as ... what the bird sees and how it moves," says Dr. ...
Cached Biology News:Auto-pilots need a birds-eye view 2
Other biology definitionOther Tags