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Envenomation is the process by which venom is injected by the bite or sting of a venomous animal. [1]Many kinds of animals, including mammals (e.g., the northern short-tailed shrew, Blarina brevicauda), reptiles (e.g., the king cobra), [2] spiders (e.g., black widows), [3] insects (e.g., wasps), and fish (e.g., stone fish) employ venom for hunting and for self-defense.
Venom is produced in a specialised gland (or glands) and is delivered through hollow fangs or a stinger in a process called envenomation. The main function of venom is to disrupt the physiological processes of the wounded animal through neurotoxic cytotoxic, myotoxic, or haemotoxic mechanisms. This can then help in certain processes such as ...
For example, snakes frequently use more venom during defensive strikes, administer more venom to larger prey, and are capable of dry biting. A dry bite is a bite from a venomous snake that results in very little or no venom expulsion, leaving the target asymptomatic. [ 89 ]
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.
Only a few modern mammal species are capable of producing venom; they are likely the last living examples of what was once a more common trait among the mammals. The definition of "venomous" becomes less distinct here, however, and whether some species are truly venomous is still debated. European mole (Talpa europaea)
The process helps remove toxic proteins that form sticky plaques linked to neurological disorders, such as Alzheimer's disease. But the scientists indicated that what drives the system was unclear ...
The ensuing madness was one of the wilder and weirder stories in NFL lore — part who done it, part high-paid legal drama, part science lesson, part Rorschach test, part character assassination ...
A spider envenomation occurs whenever a spider injects venom into the skin. Not all spider bites involve injection of venom, 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.