title: The teaching of zonal junctions.
mesh_terms: D000818:Animals; D004847:Epithelial Cells; D006801:Humans; D009469:Neuromuscular Junction / Q000502:physiology*; D012137:Respiratory System / Q000098:blood supply / Q000166:cytology* / Q000294:innervation; D009435:Synaptic Transmission