Platyhelminthes - regeneration in invertebrates, Biology

Platyhelminthes (Flatworms) - Regeneration in Invertebrates

Between flatworms the turbellarians, (mostly fresh water species and fresh water and terrestrial triclads) routinely again generate asexually by fragmentation; and most of them have considerable power of regeneration. Their regenerative capability has been investigated by numerous workers specifically in several species of the planarians (fresh water triclads) such as Dugesia. As per to some recent studies dedifferentiated cells are apparently the main source for regeneration of new tissues. But it has been held from the past that there is a reserve of undifferentiated cells, neoblasts that are the main source of cells for regeneration. The procedure of regeneration seems to be a combination of morphallaxis and epimorphosis. A different physiological gradient exists in the flat worms so that the body is polarized, the anterior (head end ) presenting one pole and the posterior (tail end) representing the other. Regeneration is correlated along with this polarity. So in an excized piece the anterior cut surface regenerates the head and the posterior cut surface regenerates a new tail.

Posted Date: 1/31/2013 6:02:48 AM | Location : United States







Related Discussions:- Platyhelminthes - regeneration in invertebrates, Assignment Help, Ask Question on Platyhelminthes - regeneration in invertebrates, Get Answer, Expert's Help, Platyhelminthes - regeneration in invertebrates Discussions

Write discussion on Platyhelminthes - regeneration in invertebrates
Your posts are moderated
Related Questions
A brief history of heart surgery : The dawn of Paediatric cardiac surgery was on August 26, 1938 when Robert, Gross, at the boston Children's Hospital, ligated ductus arteriosus

Q. What is the cost-benefit relationship regarding sewage treatment as a strategy to fight water pollution? To treat sewage is greatly cheaper for society. The non-treated sewa

Explain Continuous Murmurs and their characterstic in details? These murmurs are continuous throughout systole and diastole. It is due to continuous blood flow in the same dire

Contagious ecthyma The contagious ecthyma virus is immunologically distinct from vaccinia, but similar  to the causative agent of pseudo-cow-pox. It belongs to the genus Parapoxvi

What pathway does dietary iron follow in blood vessels

when the father and the mother of a newborn baby possesses blood group ''O'' +ve,is it possible that the baby can have a blood group ''A'' +ve or ''B''+ve ? Conventionally it shoul

How we write assimgment about mycobiology of mycoplasma in detail

Define Drug Effects on Food Intake - Anorexic Effect? Have an anorexic effect, either as a direct effect of the drug on appetite e.g., some antibiotics or because of side-effec

How many carbon dioxide molecules are liberated after each cycle of the Krebs cycle? For a single glucose how many carbon dioxide molecules were already liberated by the aerobic re

Define Factors influencing  uptake from lumen to intestinal cells? inhibition by intrinsic matrix, inhibition by dietary fiber sources, differential crowding by