Topic: Food Energy and Respiration Subtopic: How we breathe?
What happen when we exhale?
Answer: When we exhale, the diaphragm muscles move upwards and the rib cage is pushed downwards and inwards. This decreases the volume of lungs, forcing the air out of the lungs.
Learn also:
- What is an artificial pacemaker?
- What happens after white blood cell eats bacteria?
- What is pollination?
- What are harmful effects of carbon dioxide?
- What is meant by aerobic?
- What are products of respiration?


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