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How does the diaphragm contribute to breathing?
How does the diaphragm contribute to breathing?
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Practice Questions
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Q1
How does the diaphragm contribute to breathing?
By filtering air
By contracting and relaxing to change lung volume
By producing sound
By transporting oxygen
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The diaphragm contracts and relaxes to change the volume of the thoracic cavity, facilitating inhalation and exhalation.
Questions & Step-by-step Solutions
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Q
Q: How does the diaphragm contribute to breathing?
Solution:
The diaphragm contracts and relaxes to change the volume of the thoracic cavity, facilitating inhalation and exhalation.
Steps: 6
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Step 1: The diaphragm is a dome-shaped muscle located at the bottom of the chest cavity.
Step 2: When you inhale, the diaphragm contracts and moves downwards.
Step 3: This contraction increases the volume of the thoracic cavity (the chest area).
Step 4: As the volume increases, air is drawn into the lungs through the nose and mouth.
Step 5: When you exhale, the diaphragm relaxes and moves back up to its original position.
Step 6: This relaxation decreases the volume of the thoracic cavity, pushing air out of the lungs.
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