Diaphragm - Dome shaped muscle, Nasal Cavity - Preferred entrance for air from outside, Larynx - Contains the vocal chords, Trachea - Lined with cilia that remove dust, Bronchi - Tube that splits off from the trachea to each lung, Bronchioles - Smaller tubes that lead to the alveoli, Alveoli - Air sacs where gas exchange takes place, Intercostal muscles - Between the ribs, contract and move the rib cage, Ribs - Protects the lungs,

I1 The Respiratory System

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