Cyanide affects which body systems?

Cyanide affects which body systems?

• A. Nervous system and respiratory
• B. Circulatory and digestive
• C. Skeletal and muscular
• D. Endocrine and immune

Answer: (A)

Cyanide blocks the way cells use oxygen by inhibiting a key step in mitochondria, so even when oxygen is present, cells can’t produce the energy they need. Tissues that drink up energy the fastest—like the brain and the heart—suffer first. That’s why the most noticeable and immediate effects involve the nervous system (confusion, dizziness, seizures) and the respiratory system (rapid, shallow breathing and potential respiratory failure) as the body tries to cope with the lack of usable energy. Other systems can be affected too, but the hallmark acute impact is on neural function and breathing, making nervous and respiratory the best fit for how cyanide behaves.

Cyanide blocks the way cells use oxygen by inhibiting a key step in mitochondria, so even when oxygen is present, cells can’t produce the energy they need. Tissues that drink up energy the fastest—like the brain and the heart—suffer first. That’s why the most noticeable and immediate effects involve the nervous system (confusion, dizziness, seizures) and the respiratory system (rapid, shallow breathing and potential respiratory failure) as the body tries to cope with the lack of usable energy. Other systems can be affected too, but the hallmark acute impact is on neural function and breathing, making nervous and respiratory the best fit for how cyanide behaves.