This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Respiratory bronchiole proceed into ? \nSelect and explain. \nA. Terminal bronchiole, B. Bronchi, C. Teiary bronchiole, D. Alveolar duct', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Respiratory tract anatomyNasal cavity, oral cavity, plarynx and larynx forms upper respiratory tract. Larynx opens into lower respiratory tract which stas from Trachea. Trachea bifurfactes into bronchi (principal bronchi). Progressive branching of bronchi forms bronchioles. Fuher branching of bronchioles leads to terminal bronchioles. Terminal bronchiole emnate into respiratory bronchioles. Respiratory bronchioles proceed into the alveolar ducts, wich immediately branch into alveolar sacs (alveoli).', 'role': 'assistant'}]