All snakes are hunters
and predators, feeding on the animals and sometimes their eggs. Having no
limbs, snakes cannot hold their preys down to bite; hence they usually swallow
them whole. Poisonous snakes sometimes do immobilizetheir preys with their
venom to make consumption easier.
Most poisonous snakes
are conspicuously colored to warn others off. One example is the redheaded
krait which has a bluish-black body and scarlet head and tail. Snakes like the
cobras, which have less outstanding body colors, display their fatality by
lifting the front part of their body and spreading their hoods.
It is truly a myth that
poisonous snakes attack humans for food. Humans can never be their targets for
food as we are normally too large for them to swallow. in cases where snakes do
bite, these attacks are usually defensive ones and the venom injected is
normally little or sometimes even none. The full, fatal dose of the venom is
only released on smaller animals which the snakes can swallow easily. Besides
helping in the killing and immobilizing of their preys, the poison also acts as
digestive agents for snakes.
Why then is the venom
so deadly ? In general, there are three kinds of poisons in the venom, though
in varying amounts, depending on the type of snake in question. Venoms usually
contain substances that weaken the blood corpuscles and the lining of the blood
vessels. Profuse bleeding, often a common result of snake-bites, is caused by
the anticoagulants present in the poison which prevents blood clotting. The
paralysis of the heart and respiratory muscles is performed by the nervous
system attacking toxins.
Though these bites are
deadly, certain actions can be taken to slow down the spread of the venom,
hence saving the victim's life. Attempting to incise and suck at the
spot of the bite is more likely to be harmful than a cure. The poisonous venom
usually travels fast into the body upon being released; hence sucking at the
mouth of the wound will not help remove the poison, rather, incising the bite
may lead the victim to great pain and further profuse bleeding. Instead, a
broad, firm crepe bandage should be applied over the would and up the
full limb to compress the tissues and prevent the spread of the venom. After
which, the victim must be duly sent to the hospital for professional treatment.
Summary: Snakes attack larger
animals like us when they are disturbed. These bites are not fatal as little or
none of the venom is released. The full, deadly dose of poison is used to kill
smaller animals for food. Snake venoms contain three types of poisons, usually
varying in amounts There are substances that weaken the blood cells and walls
of blood vessels; anticoagulants to prevent blood clotting, which results in
profuse bleeding and toxins to paralyze the heart and respiratory muscles. When
bitten by a snake, one should apply a broad bandage over the wound and up the
limb to help compress the tissues and prevent the spread of the venom before
sending the victim the hospital.
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