Pesticides that can cause symptoms like tremors and nausea primarily affect which body system?

Pesticides that cause symptoms such as tremors and nausea primarily affect the nervous system. These symptoms indicate that the chemicals are acting on the nervous system, which is responsible for controlling and coordinating movements, emotions, and responses to stimuli.

The nervous system comprises the brain, spinal cord, and peripheral nerves. Pesticides can disrupt normal neurotransmission or neurotoxicity, leading to a range of symptoms, including tremors (involuntary muscle contractions) and gastrointestinal disturbances like nausea. This association is particularly strong with certain classes of pesticides, such as organophosphates and carbamates, which are known neurotoxins.

While the digestive system can be affected by pesticides and can lead to nausea, the symptoms described in the question point more specifically to disruptions in the nervous system. Other systems, like the immune and endocrine systems, while important in terms of pesticide toxicity, are not directly linked to the symptoms of tremors and nausea in the same way the nervous system is. Understanding the specific actions of these chemicals on different body systems helps in both recognizing symptoms of exposure and implementing safer handling practices in pest control.