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Core Topics	Supplementary Material
Introduction: Breathing Movements	-
Conducting & Respiratory Parts	-
Trachea	trachea (MP)	trachea LS (MP )	tracheal epithelium (HP)
Bronchial Tree	bronchus (LP)	bronchial lymph node (LP)	bronchial glands (MP)
Respiratory Epithelium	specialisations of respiratory epithelium	goblet cells & cilia	cilia
	EM of cilia (TS)	pathological increase in goblet cells	metaplasia of the respiratory epithelium
Bronchiole	respiratory bronchiole (MP)	respiratory bronchiole	-
Alveolus	capillary bed in alveolar wall (HP)	capillaries in alveolar wall (HP)	dust cells in alveoli (VHP)
	elastic fibres in alveolar wall (HP)	-