Explain the mechanism of breathing.
Understand the Problem
The question is asking for an explanation of how the process of breathing works, including the physiological mechanisms involved, such as the role of the respiratory system, diaphragm, and gas exchange.
Answer
Breathing involves diaphragm contraction during inhalation and relaxation during exhalation to move air in and out of the lungs.
The mechanism of breathing involves inhalation and exhalation. During inhalation, the diaphragm contracts and moves downward, while the ribcage muscles pull upward, increasing thoracic cavity volume and decreasing pressure, causing air to flow into the lungs. During exhalation, these muscles relax, decreasing the volume and increasing pressure, pushing air out.
Answer for screen readers
The mechanism of breathing involves inhalation and exhalation. During inhalation, the diaphragm contracts and moves downward, while the ribcage muscles pull upward, increasing thoracic cavity volume and decreasing pressure, causing air to flow into the lungs. During exhalation, these muscles relax, decreasing the volume and increasing pressure, pushing air out.
More Information
The diaphragm and intercostal muscles play crucial roles in changing thoracic cavity dimensions, allowing air movement. The process is primarily passive for normal exhalation.
Tips
A common mistake is thinking both inhalation and exhalation require active effort. Inhalation is active, but exhalation is usually passive unless it's forced breathing.
Sources
- Mechanism Of Breathing - Explore Mechanism Of Respiration In Detail - byjus.com
- The Process of Breathing | Anatomy and Physiology II - courses.lumenlearning.com
- Mechanics of Breathing - Inspiration - Expiration - TeachMePhysiology - teachmephysiology.com
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