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Wednesday, March 25, 2015

RATTLE SNAKE POISON

World Watching - 1:00 PM
Most Dangerous Snake 
Venomous organisms inflict poisonous wounds by actively biting, stinging or scratching their victims and injecting toxins into them. This distinguishes them from poisonous species which usually contain or secrete toxins and need to touched or eaten to contaminate their victims. Envenomation can be a predatory tactic or a defence mechanism. It can be costly to produce and to inject toxins, so often organisms will use as little venom as possible in an attack.
                                                             
Something to keep in mind is that all toxins affect individual species differently. Even though a toxin may cause paralysis and death in one species, it could only produce vomiting on another species. One’s own immunity, the strength of the toxin, and the size of the individual all affect how the individual will respond. While there are thousands of venomous and poisonous species in the world, not all have serious affects on humans. For example, there are 600 or so venomous snakes in the world but only 250 would have some affect on humans. With some, you may just experience pain or swelling while others can cause death. If you are ever bitten/stung or think you may have absorbed poison, try to identify the species! But keep in mind, not only do many species have no dangerous affects on humans, you aren’t their intended victim in most cases. Approximately 40% of snake bites, for example, occur when someone is trying to handle a snake in some way, and 40% of those have been found to involve alcohol.
                               
Teeth Model  
In the collection of Professor Bell there is a small snake which, having by mishap attempted to swallow a mouse of too large size, and being quite unable, in consequence of the mechanism referred to, to disgorge it, was found dead, and the skin and muscles of its neck absolutely rent from excessive stretching.

Behind the large poison-fang in use, the capsule that encloses it generally contains the germs of several others, ready to supply its place should the former be broken off; and in the event of such an accident, one of these supplementary teeth soon becomes consolidated with the superior maxilla, and adapted in all respects to take upon itself the terrible office of its predecessor.

Dreadful as are the means of offence thus conferred upon the poisonous serpents, it is impossible to avoid noticing in this place that admirable provision of Nature which, in one genus at least, serves to give timely warning of the vicinity of such dangerous assailants. We need merely mention the rattle of the Rattlesnakes . an organ the intention of which is so obvious that the most obtuse cannot contemplate it without at once appreciating the beauty of the contrivance. This singular rattle is formed of numerous horny rings, that are in fact merely modifications of the general scaly covering of the reptile, so loosely articulated together that the slightest movement of their formidable possessor is betrayed by the startling noise produced by the collision of the different pieces composing the organ: even when at rest, the creature announces by rapid vibrations of the tail the place of its concealment, apparently to caution the inadvertent intruder against too near an approach.
                                                          
In the grand police of Nature, the scavengers are by no means the least important agents. In hot climates especially, where putrefaction advances with so much rapidity, were there not efficient and active officers continually employed in speedily removing all dead carcases and carrion, the air would be perpetually contaminated with pestilential effluvia, and entire regions rendered unhabitable by the accumulation of putrefying flesh.
Perhaps, however, no localities could be pointed out more obnoxious to such a frightful cause of pestilence than the banks of the tropical rivers - those gigantic streams which, pouring their waters from realm to realm, daily roll down towards the sea the bloated remains of thousands of creatures which taint the atmosphere by their decomposition.
                                     
Rattlesnakes are predators who live in a wide array of habitats.They hunt small animals such as birds and rodents. They kill their prey with a venomous bite, rather than by constricting. All rattlesnakes possess a set of fangs with which they inject large quantities of hemotoxic venom. Rattlesnake bites are the leading cause of snakebite injuries in North America, and cause approximately 82% of fatalities. However, rattlesnakes rarely bite unless provoked or threatened; and if treated promptly, the bites are rarely fatal.
                                    


The difference between medicine and poison is often located on the size of the overdose. For example, one aspirin tablet helps reduce pain, but 200 tablets alone is enough to kill us. Some of the ingredients in medications can be very toxic and is known as poison. However, some types of toxins such as below, actually contain the drug.Snake venom is collected from snake farm has long been used as a antibisa for snake bites. Antiracun to produce pure snake venom, diluted and injected into mammals such as goats, sheep, rabbits, or horses. Once injected, the animal will give the immune response so that scientists could collect the animals produced antibodies for creates a antiracun snake.Make medicine from snake venom is actually new. For example, a protein disintegron eristostatin extracted from snake venom in Asia, it helps the immune system fight cancer of the skin. Research is now focused to find out the potential of this protein against parkinson's disease and autoimmune diseases

MEHEDI HASAN




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