Venomous Snakes
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biology
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published 26/11/2007
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SummaryThe term pit viper comes from the presence of paired, highly sensitive, thermoreceptor organs (pits) present on the forward portion of these snakes' heads. These structures, also known as foveal organs, serve the snake in locating prey, aiming strikes, and adjusting venom dose. The foveal organs can detect temperature changes of as little as 0.003° C (0.0054° F). A neurologic feedback loop between the foveal organs and the venom delivery apparatus may allow the snake to adjust the volume of venom it injects into a potential meal or a perceived threat.
Table of Contents
- Anatomy
- Pit Vipers.
- Coral Snakes.
- Venoms
- Pit viper venom has both offensive (i.e., food gathering) and defensive functions.
- A popular belief is that juvenile rattlesnakes are more dangerous than adult snakes because their venom is more toxic and they are unable to control the volume they release.
- Neurotoxicity has been clinically associated with severe myotoxicity in many cases.
- Mojave toxin is thought to inhibit acetylcholine release at the presynaptic terminal of the neuromuscular junction.
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