1.

Which of the following is the correct path of oxygen in humans during inhalation? 

A. Nostrils\[\to \]Nasal Cavity\[\to \]Pharynx\[\to \]Trachea\[\to \]Bronchi\[\to \]Bronchiole\[\to \] Alveoli                           
B. Nostrils\[\to \]Nasal Cavity\[\to \]Trachea \[\to \]Pharynx\[\to \]Bronchi\[\to \]Bronchiole\[\to \] Alveoli                          
C. Nostrils\[\to \]Nasal Cavity\[\to \]Pharynx \[\to \]Trachea \[\to \]Alveoli\[\to \]Bronchi\[\to \]Bronchiole                        
D. Nostrils\[\to \]Nasal Cavity \[\to \]Pharynx\[\to \]Bronchi\[\to \]Trachea\[\to \]Bronchiole\[\to \] Alveoli                          
Answer» B. Nostrils\[\to \]Nasal Cavity\[\to \]Trachea \[\to \]Pharynx\[\to \]Bronchi\[\to \]Bronchiole\[\to \] Alveoli                          


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