1 Symptoms are due to the effects of excess acetylcholine on nicotinic and muscarinic acetylcholine receptors in the CNS, at neuromuscular junctions, and in the sympathetic, and parasympathetic nervous systems. 2  Nicotinic and muscarinic receptors have different. 3  Functions. 4  Locations.
The reason snake repellents don t work is because there is nothing intimidating to a snake about the smell of naphthalene or sulfur. Even if there were, snakes do not smell the way people traditionally assume they do. Snakes use smell as a method of information.
Ecotherms use the external environment to maintain their internal environment. If a snake, being an ecotherm needs to cool itself down it may take water from lakes and rivers. It may also use cool ground or the cool water to rest in allowing the conduction of the cooler surface to cool them down.