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Q What is the most crucial muscular structure in the respiratory system of humans?

ID: #10025 Respiratory system 107 views
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#10025Q ID
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Respiratory systemTopic
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  • A External intercostal muscle ✔ ✖
  • B Internal intercostal muscle ✔ ✖
  • C Diaphragm ✔ ✖
  • D Vertebral column ✔ ✖
Correct Answer: Option C

Explanation

The diaphragm is the most important muscular structure in the respiratory system of humans. It separates the thoracic and abdominal cavities and contracts during inspiration, leading to an increase in thoracic volume. Conversely, during expiration, it relaxes causing a decrease in thoracic volume. This change in thoracic volume leads to the movement of air into and out of the lungs, allowing for breathing to occur.

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