MDARD Michigan Core Pesticide Applicator Practice Exam

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Prepare for the MDARD Michigan Core Pesticide Applicator Exam. Study with flashcards and detailed explanations for each topic. Get ready to excel in your examination!

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What is a common symptom of organophosphate poisoning?

Muscle twitching
Nausea
Dry mouth
Headaches

The correct answer is: Muscle twitching

Muscle twitching is a well-known symptom of organophosphate poisoning. Organophosphates are a class of chemicals frequently used in pesticides that inhibit the enzyme acetylcholinesterase. This inhibition leads to an accumulation of acetylcholine, a neurotransmitter, at nerve synapses. The excess acetylcholine causes continuous stimulation of muscles, which can result in symptoms such as twitching or spasms. In addition to muscle twitching, other symptoms associated with organophosphate poisoning include excessive salivation, sweating, and gastrointestinal disturbances. However, muscle twitching is particularly notable as it reflects the overstimulation of neuromuscular junctions due to the disruption of normal acetylcholine breakdown. This response differentiates it from other symptoms that are not specifically linked to the mechanism of organophosphate toxicity.