Fig. 16.1.

Location and projection of RTN Phox2b-VGLUT2 neurons. Parasagittal schematic section of the lower brainstem of a rodent. The retrotrapezoid nucleus resides at the ventral surface of the medulla oblongata under the facial motor nucleus (7). RTN innervates all four subdivisions of the ventral respiratory column (VRC), the dorsolateral pons (KF Kölliker-Fuse nuc., Itr intertrigeminal region, LPbr lateral parabrachial nuc.), the nucleus of the solitary tract (NTS) and the A5 region. Other abbreviations: LRt lateral reticular nucleus, Mo5 trigeminal motor nucleus, Pn pontine nuclei, scp superior cerebellar peduncle, SO superior olive, tz trapezoid body, 5n trigeminal nerve