This is a diagram of a human respiratory system. This will help us with the completion of our questions and help you where and what the parts of the respiratory system. 
This shows how a person breathes using a diagram and labels. It shows us the lungs at which direction the air enters and goes out. 
Clear diagram of the human respiratory system that helps identify key organs and understand their roles in breathing and air flow. PAPR Respirator Supplier Philippines
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