Question
The “picture shown below” is one of the classical real-life applications of?
A. Boyle’s Law.
B. Charle’s Law.
C. Avogadro Law.
D. Dalton’s Law.
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Correct Answer » A Explanation |
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This pic depicts one of the real-life applications of Boyle’s law.
Boyle’s law can be used to explain breathing.
Events during inhalation:
- Thoracic cavity, or chest cavity, always has a slight, negative pressure which aids in keeping the airways of the lungs open.
- During the process of inhalation, the lung volume expands as a result of contraction of diaphragm and intercostal muscles (the muscles that are connected to the rib cage)
- In turn expanding the thoracic cavity.
- According to boyle’s law-
- P1 X V1 = P2 X V2
- Due to this increase in lung volume, the thoracic pressure is decreased, based on the principles of Boyle’s Law.
- This decrease of thoracic pressure relative to the environment makes cavity pressure less than the atmospheric pressure.
- This pressure gradient between the atmosphere and the thoracic cavity allows air to rush into the lungs; inhalation occurs.
- The resulting increase in volume is largely attributed to an increase in alveolar space because the bronchioles and bronchi are stiff structures that do not change in size.