[Autonomic innervation of the vessels of the nasal mucosa: current concepts].

The nasal cycle enables the conditioning of air breathed in. It depends on the vascular vegetative innervation. Whilst its central diencephalic origin is probable, its mechanics remain mysterious. The involvement at the loco-regional level of short circuits ensuring the anatomical links between the vegetative, sensitive and cellular systems of the nasal mucosa is the basis of a new approach to chronic rhinological pathologies and certain facial algias.