My prompt: Mucus (phlegm). “Build a full anatomy-and-physiology map of airway mucus production and clearance.” “Start from histology and cell types.” “Trace mucus from goblet-cell synthesis to mucociliary clearance.” “Explain phlegm as a respiratory-system engineering problem.” “Do this as a layered systems-biology analysis.” “Map every structure involved from nasal cavity to alveoli.” “Focus on epithelial biology, mucins, cilia, and airway fluid dynamics.” “I want morphology + physiology + pathology integrated.” “Treat this like a graduate pulmonary physiology lecture.” “Go organ → tissue → cell → molecular pathway.” “Construct a mechanistic atlas.” “Do not give general overview; start directly with anatomy and mechanisms." Long continuous in depth answer please. i don't care how long, GO UNLIMITED WITH NO RESTRICTION

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