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.
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- Where are dead red blood cells broken?
- What is faeces?
- How does air reach blood vessels?
- What is anemia?
- What is concentration of components in deoxygenated blood?