Limb regeneration in anuran amphibians, Biology

Limb Regeneration in Anuran Amphibians

We are already aware that the limb of adult frogs does not regenerate later than amputation. Though, some regeneration has been found to take place in experimental animals. Recovery of regeneration capability in most metamorphic frogs is made possible by tissue trauma and prevention of wound healing. This is acquired by extensive piercing of the amphibian amputaton site with a needle also traumatization by using hypertonic solutions. Normally wound healing in adult anurans is brought about through the movement of the epidermis and the dermis over the wound surface. In contrast just only the epidermis covers the wound in the urodeles.

Generally when a part of the adult anuran is amputated the wound heals by the production of connective tissue from dermal elements (dermalization) and the scarring of injured tissues. Continued injury in some type of way interferes with dermalization and permits a variable amount of regeneration to occur. Similar results of regeneration have been attained by implanting batteries and applying a continuous direct current by fine wire to the amputation area. Superficially this emerges to stimulate action of the nerves. Regeneration also sometimes results from irritation. Implanting of adrenal glands as well appears to prevent dermalization. It has been observed that if larval skin is applied over adult frogs then regeneration becomes possible. Other studies have implicated the wound epithelium as a significant factor in initiating regeneration.

Posted Date: 1/31/2013 4:52:07 AM | Location : United States







Related Discussions:- Limb regeneration in anuran amphibians, Assignment Help, Ask Question on Limb regeneration in anuran amphibians, Get Answer, Expert's Help, Limb regeneration in anuran amphibians Discussions

Write discussion on Limb regeneration in anuran amphibians
Your posts are moderated
Related Questions
Q. Show the pH range of natural honey? The pH of natural honey ranges from 3.4 to 6.1. Acidity of honey is primarily due to presence of acids such as gluconic acid, pyruvic a

Fishe s - Heart is 2 chambered 1 auricle & 1 ventricle present. Sinus venosus, truncus or conus arteriusus present. Only impure blood come in heart so heart is venous he

TONGU E - On the tongue 4 types of papillae are present. (i) Filliform - Filliform papillae are most abundant and have no taste bunds. Filliform papillae

Determination of Nicotinic acid The chemical methods of assay are based on colour reactions of pyridine. Nicotinic acid and nicotinamide are converted by cyanogen bromide into

Define Nutritional Management of Eating Disorders? In the last unit, we focused on weight management. It is important to understand that the problems associated with too much d

How to Recognition of Congenital Heart Disease ? The manifestations of CE-ID are different in a neonate, an infant or a child. It is often easy to recognise the presence of CHD

Triple Fusion The fusion process between the other male gamete and the secondary nucleus follows the same pattern as syngamy. In most plants, the polar nuclei are only partial

S p e c i a l Uses Biogas Biogas is an important renewable energy resource for rural areas. Generation of bio-gas from dung and urine is a very simple and cost-effective

Define Nutritional Management of Celiac Disease? A gluten-free diet is the major therapy for celiac disease patients, particularly children, and may be needed for lifelong adhe

Describe Other Concerns in Adults with Congenital Heart Disease ? Infective endocarditis prophylaxis: The standard guidelines for infective endocarditis prophylaxis should be