Question

2. Describe the mechanism of breathing in human
beings. Explain the role of intercostal muscles
and the diaphragm. Take the help of a diagram.
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Answer 1

Answer:

During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. Due to this increase in volume, the pressure is decreased, based on the principles of Boyle's Law.