what is nurotoxic and write in 3 marker
Answers
Neurotoxins are toxins that are destructive to nerve tissue (causing neurotoxicity).[3] Neurotoxins are an extensive class of exogenous chemical neurological insults[4] that can adversely affect function in both developing and mature nervous tissue.[5] The term can also be used to classify endogenous compounds, which, when abnormally contacted, can prove neurologically toxic.[4] Though neurotoxins are often neurologically destructive, their ability to specifically target neural components is important in the study of nervous systems.[6] Common examples of neurotoxins include lead,[7] ethanol (drinking alcohol),[8] glutamate,[9] nitric oxide,[10] botulinum toxin (e.g. Botox),[11] tetanus toxin,[12] and tetrodotoxin.[6] Some substances such as nitric oxide and glutamate are in fact essential for proper function of the body and only exert neurotoxic effects at excessive concentrations.
Neurotoxicity occurs when the exposure to natural or manmade toxic substances (neurotoxicants) alters the normal activity of the nervous system. This can eventually disrupt or even kill neurons, key cells that transmit and process signals in the brain and other parts of the nervous system.