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Questions and Answers
What is the definition of inhalation?
What is the definition of inhalation?
Inhalation is the process of 'breathing in' air containing oxygen.
What is the definition of exhalation?
What is the definition of exhalation?
Exhalation is the process of 'breathing out' air rich in carbon dioxide.
Why does exhalation occur?
Why does exhalation occur?
Exhalation occurs to get rid of carbon dioxide, which is a waste product of cellular respiration.
What are the two differences between inhaled air and exhaled air?
What are the two differences between inhaled air and exhaled air?
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Which gas is more in exhaled air than in inhaled air?
Which gas is more in exhaled air than in inhaled air?
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What is the percentage of carbon dioxide in inhaled and exhaled air?
What is the percentage of carbon dioxide in inhaled and exhaled air?
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Study Notes
Breathing and Respiration
- Breathing involves exchanging gases, while respiration is a biochemical process.
Inhalation and Exhalation
- Inhalation is the process of taking in air containing oxygen, also known as 'breathing in'.
- Exhalation is the process of giving out air rich in carbon dioxide, also known as 'breathing out'.
- Inhalation is an essential process for all humans, and is autonomic, meaning it doesn't require conscious control.
- Inhalation allows oxygen to enter the lungs, which gets absorbed into the bloodstream.
- The process of inhalation is shorter than exhalation.
Difference between Inhalation and Exhalation
- The main difference between inhalation and exhalation is that the size of the chest cavity increases in inhalation and decreases in exhalation.
- Inhaled air contains 21% oxygen, while exhaled air contains 16% oxygen.
- Exhaled air contains a higher percentage of carbon dioxide than inhaled air, with a tenfold increase.
- Exhaled air also contains moisture.
Inhaled Air vs. Exhaled Air
- The key differences between inhaled air and exhaled air are:
- Carbon dioxide percentage: 0.03% in inhaled air, 3% in exhaled air
- Oxygen percentage: 21% in inhaled air, 16% in exhaled air
- Moisture: present in exhaled air, not in inhaled air
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Description
Test your knowledge on the difference between inhalation and exhalation in this informative quiz. Learn about the key distinctions between these two processes involved in breathing and respiration.
