spider bite symptoms

The pathophysiology of a spider bite is due to the effect of its venom. A spider envenomation occurs whenever a spider injects venom into the skin.

Not all spider bites inject venom – a dry bite, and the amount of venom injected can vary based on the type of spider and the circumstances of the encounter.

The mechanical injury from a spider bite is not a serious concern for humans. Some spider bites do leave a large enough wound that infection may be a concern.



snakebite symptoms

Snake venom is the poisonous, typically yellow fluid stored in the modified salivary glands of venomous snakes.

There are hundreds of venomous snake species that rely on the venom they produce to debilitate and immobilize their prey.

Venom is composed of a combination of proteins, enzymes, and other molecular substances.

These toxics substances work to destroy cells, disrupt nerve impulses, or both. Snakes use their venom cautiously, injecting amounts sufficient to disable prey or to defend against predators.

Snake venom works by breaking down cells and tissues, which can lead to paralysis, internal bleeding, and death for the snake bite victim.


Yes, there are actually two species of venomous lizards.

Venomous Lizard – Gila Monster

Gila monsters are native to the southwestern deserts of the U.S. and northwestern Mexico.

They are the largest land-dwelling lizard in the U.S.

They can reach lengths of up to two feet and weigh over five pounds. They are black with orange, red, or pinkish-colored patches.

The venom of a Gila monster is a fairly mild neurotoxin. The lizard does not possess fangs but does have sharp, serrated teeth.

Insect venoms are complicated.

Unlike many other insect venoms, we have a relatively good idea of the percentage breakdown of the venom of your average bee.

When the bee stings, the venom is mixed with water, so the actual composition of the substance it injects into you is around 88% water and 12% venom.

The main toxic component of bee venom also referred to as apitoxin, is melittin (a toxic protein in bee venom that causes localized pain and inflammation but also has a moderate antibacterial and antifungal effect).

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