Nerve Agents are best described as agents that disrupt the transmission of nerve impulses between nerves and their receiving organs.

• A. Choking Agents
• B. Blister Agents
• C. Nerve Agents
• D. Blood Agents

Answer: (C)

Nerve agents disrupt the normal transmission of nerve impulses by blocking acetylcholinesterase, the enzyme that breaks down acetylcholine at synapses. When this enzyme is inhibited, acetylcholine builds up, causing continuous stimulation of cholinergic receptors on both nerves and their target organs. This leads to a rapid, widespread effect: increased secretions, bronchorrhea and bronchospasm, pinpoint pupils, sweating, digestive distress, and eventually weakness or paralysis of muscles, including those needed for breathing. This mechanism specifically involves interference with signaling between nerves and their receivers, which is what the statement describes.

Choking agents primarily irritate the respiratory tract and can cause coughing, breathing difficulties, and edema without directly altering nerve signal transmission. Blister agents cause skin and eye damage and blisters. Blood agents interfere with cellular respiration by disrupting how cells use oxygen, not by changing nerve signaling. So the description aligns with nerve agents because it centers on the disruption of neural communication at synapses.