Topic: Food Energy and Respiration Subtopic: Making the air moist, warm and clean
Why we should not breathe through mouth?
Answer: Mouth does not contain mucus, blood vessels near the surface or hair that could trap the dust particles or germs.
- What is meant by leaking of heart valves?
- What are properties of blood in arteries?
- How does blood flow in arteries?
- What is glycogen and where is it stored?
- What makes heart sound like lub?
- What is pulmonary vein?