By directly affecting which body part Cyanide acts as a poison?

Options :
  1. Brain
  2. Nervous system
  3. Cardiac and respiratory system
  4. Affinity of blood for oxygen


Answer and Explanation :-

Answer: Option 3

Explanation:

After exposure to the body, cyanide quickly enters the bloodstream. The body handles small amounts of cyanide differently than large amounts. In small doses, cyanide in the body can be changed into thiocyanate, which is less harmful and is excreted in urine. In the body, cyanide in small amounts can also combine with another chemical to form vitamin B12, which helps maintain healthy nerve and red blood cells. In large doses, the body's ability to change cyanide into thiocyanate is overwhelmed. Large doses of cyanide prevent cells from using oxygen and eventually these cells die. The heart, respiratory system and central nervous system are most susceptible to cyanide poisoning.

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