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Which gas is primarily responsible for stimulating the respiratory center?

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Question: Which gas is primarily responsible for stimulating the respiratory center?

Options:

  1. Oxygen
  2. Carbon dioxide
  3. Nitrogen
  4. Hydrogen

Correct Answer: Carbon dioxide

Solution: 

Carbon dioxide levels in the blood are the primary stimulus for the respiratory center to increase breathing rate.

Which gas is primarily responsible for stimulating the respiratory center?

Practice Questions

Q1
Which gas is primarily responsible for stimulating the respiratory center?
  1. Oxygen
  2. Carbon dioxide
  3. Nitrogen
  4. Hydrogen

Questions & Step-by-Step Solutions

Which gas is primarily responsible for stimulating the respiratory center?
  • Step 1: Understand that the respiratory center is a part of the brain that controls breathing.
  • Step 2: Know that the body needs to balance oxygen and carbon dioxide levels in the blood.
  • Step 3: Realize that when carbon dioxide levels rise, it signals the body to breathe more to get rid of the excess CO2.
  • Step 4: Conclude that carbon dioxide is the main gas that stimulates the respiratory center to increase the breathing rate.
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