Role of nerves - regeneration, Biology

Role of Nerves - Regeneration

It has been seen that soon after amputation nerves invade the regeneration blastema. If the stump is denervated by cutting the nerves supplying the limb as they come out from the spinal cord, and are avoid from regrowing into the site of amputation them regeneration fails to take place. The apical cap is not formed. In larval urodeles, denervation results in large scale regression of stump tissues and the whole limb stump may disappear. If the nerve fibers are allowed to regrow into the stump earlier than a thick skin forms on the wound surface regeneration may be re-initiated. These studies have displayed with certainty that the existence of nerves is essential for regeneration of the limb.

A number of experimental studies have been made to know the nature and mechanism of nerve influence on limb regeneration in urodeles. The nerves are believed to generate a "trophic influence" on the blastema cells of the regenerating limb. This neurotrophic effect has been emerge to be produced by all nerves, if motor or sensory or central irrespective of whether they have functional relationship with the central nervous system or not. Grafting of spinal ganglia in the regenerating area of limbs, whose own nerves have been cut and severed, also promote regeneration. Though, it has been found that the presence of a minimum number of nerve fibers is essential for regeneration. Below this threshold regeneration does not take place.

Posted Date: 1/31/2013 4:47:25 AM | Location : United States







Related Discussions:- Role of nerves - regeneration, Assignment Help, Ask Question on Role of nerves - regeneration, Get Answer, Expert's Help, Role of nerves - regeneration Discussions

Write discussion on Role of nerves - regeneration
Your posts are moderated
Related Questions
what are the properties of synapses

Q. Explain threaded implants? Cylindrical non-threaded implants poorly distribute compressive forces and generate shears forces that may fragment and break the bone surrounding

All of us must have suffered from diarrhoea at least once in our lifetime. How do you feel thereafter? Well most of us must have experienced weakness, dizziness, dryness of mouth a

Describe how the International Astronomical Union defines a planet. Also include why Pluto is no longer considered a planet.

The principal nitrogenous excretory compound in humans is synthesised: 1. in kidneys but eliminated mostly through liver 2. in kidneys as well as eliminated by kidneys 3.


Radiation Pollution It is unfortunate that harmful radiations cause severe pollution but they cannot be seen or observed by eyes and are difficult to judge, unless present in

Q. What are the major water properties that make water special for life? The water properties that make water biologically important are molecular polarity, thermal stability (

Krebs Cycle The acetyl  group  of acetyl   co A  is now completey  degraded  stepwise  into  carbon  and hydrogen atoms  in the mitochondria  by a cyclic  sequence of  eight ma

explain the role of cyclic photophosphorylation in photosynthesis