Respiratory System
- Provides body cells with oxygen and removes carbon dioxide that cells produce as waste
- Mucus: thick secretion that moistens, lubricates, and protects mucous membranes
- Epiglottis: a flap that covers the entrance to the trachea when you swallow.
- Bronchi: tube like structures through which air moves to the lungs
- Bronchioles: Small tubes divided into alveoli (microscopic air sacs)
Keep Your Respiratory System Healthy
- Do not smoke
- Avoid second hand smoke
- Do not inhale harmful drugs
- Avoid polluted air
- Exercise
- Avoid inhaling harmful chemicals
- Seek medical help for respiratory infections