Question

(b) How can you say that demonstrate the role of diaphragm in breathing?
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Answer 1

Explanation:

A large dome-shaped muscle under the lungs called the diaphragm squeezes downward when you breathe in, making a vacuum that causes a rush of fresh air into your lungs. The opposite happens when you breathe out -- your diaphragm relaxes upward, pushing on your lungs, letting them deflate.