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How does the diaphragm contribute to breathing?
Practice Questions
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
Questions & Step-by-Step Solutions
How does the diaphragm contribute to breathing?
Steps
Concepts
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.
Diaphragm Function
– The diaphragm's role in changing thoracic cavity volume to enable breathing.
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