Which term describes a substance that damages the nervous system?

Which term describes a substance that damages the nervous system?

• A. Neurotoxin
• B. Hepatotoxin
• C. Nephrotoxin
• D. Cardiotoxin

Answer: (A)

A substance that damages the nervous system is called a neurotoxin. Neurotoxins target the brain, spinal cord, or peripheral nerves and disrupt how nerves communicate. They can interfere with ion channels, neurotransmitter synthesis or release, or receptor function, leading to symptoms such as numbness, weakness, tremors, cognitive changes, or paralysis depending on the specific toxin and exposure level. In occupational health, recognizing neurotoxins helps prioritize controls and medical surveillance because nerve damage can be serious and, in some cases, irreversible. Examples include organophosphates, which inhibit acetylcholinesterase and cause overstimulation of nerves, and metals like lead or mercury, which disrupt neural signaling. By contrast, hepatotoxins damage the liver, nephrotoxins damage the kidneys, and cardiotoxins affect the heart, which is why those terms are used for toxins targeting those organs rather than the nervous system.

A substance that damages the nervous system is called a neurotoxin. Neurotoxins target the brain, spinal cord, or peripheral nerves and disrupt how nerves communicate. They can interfere with ion channels, neurotransmitter synthesis or release, or receptor function, leading to symptoms such as numbness, weakness, tremors, cognitive changes, or paralysis depending on the specific toxin and exposure level. In occupational health, recognizing neurotoxins helps prioritize controls and medical surveillance because nerve damage can be serious and, in some cases, irreversible. Examples include organophosphates, which inhibit acetylcholinesterase and cause overstimulation of nerves, and metals like lead or mercury, which disrupt neural signaling. By contrast, hepatotoxins damage the liver, nephrotoxins damage the kidneys, and cardiotoxins affect the heart, which is why those terms are used for toxins targeting those organs rather than the nervous system.