ANAT20006 Lecture Notes - Lecture 21: Pseudostratified Columnar Epithelium, Nasal Cavity, Olfactory Nerve
1 Feb 2020
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Lecture 21 upper respiratory tract (8. 1) (nasal and oral cavities, larynx and pharynx) Resonance chamber for sound production (quality of sounds) Phonation (ability to produce sound: has vocal chords (folds) Communicates b/w upper airways and lower airways. At back of nose, mouth and larynx. Top third = olfactory area olfactory nerve to cranial nerve 1. Lower 2 thirds = respiratory area: epithelium lining ciliated pseudostratified columnar epithelium, cilia helps mucus move, chronic smokers don"t have movement of mucus across surface wake up with pile of mucus in lower airways. Projections of bone that extend into nasal cavity from lateral wall. Turbinates collectively: made of 3 bones conchae, produce turbulence for air coming in. Meatus: space: provide an opportunity for things to open into the nasal cavity, paranasal sinuses open into them, spaces develop as outgrowths of the nasal cavity and into surrounding and developing bones. Mylohyoid muscle: closes off so things don"t grasping food, liquids/drinking.
