What path does air take when flowing from the glottis to the respiratory membrane?
1) larynx, trachea, bronchi, bronchioles, respiratory bronchioles, alveoli
2) larynx, trachea, respiratory bronchioles, bronchioles, alveoli
3) trachea, bronchi, larynx, bronchioles, alveolar duct, alveolar sac
4) larynx, trachea, bronchioles, bronchi, alveolar sac, respiratory membrane