Intravenous Regional Anesthesia.- Trigeminal Ganglion Block.- Ophthalmic Nerve Block.- Supraorbital and Supratrochlear Nerve Block.- Maxillary Nerve Block.- Infraorbital Nerve Block.- Mandibular Nerve Block.- Mental Nerve Block.- Sphenopalatine Ganglion Block.- Glossopharyngeal Nerve Block.- Laryngeal Nerve Block.- Cervical Plexus Block: Superficial and Deep.- Spinal Accessory Nerve Block.- Phrenic Nerve Block.