Question

State the role of diaphragm in Breathing.

Answer 1

Answer:

Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.

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Answer 2

• The diaphragm is the primary muscle of breathing, lying beneath the lungs.
• It's a big dome-shaped muscle that contracts spontaneously and regularly.
• The diaphragm contracts and flattens during inhalation, causing the chest cavity to expand.
• A vacuum is created by this contraction, and air is drawn into the lungs.
• The diaphragm relaxes and returns to its domelike form during exhalation, allowing air to escape the lungs.