Ventral respiratory group

Compare and contrast functions of the dorsal and ventral respiratory groups in the medullary respiratory center... 

Ellenberger, H. H., Feldman, J. L., and Zhan, W.-Z. (1990). Subnuclear organization of the lateral tegmental field in the rat. II Catecholamine neurons and ventral respiratory group. J. Comp. Neurol. 294, 212-222. 

RVL rostroventrolateral reticular nucleus 66, 68-71, 73-75, 83-84,90 RVRG rostral ventral respiratory group 70-75... 

VENTRAL RESPIRATORY GROUPS AND B OTZINGER COMPLEX. These areas were delineated in accordance with Ellenberger et al. (1990), Kanjhan et al. (1995), and Cox and Halhday (1993). 

Neurophysiological and neuroanatomical studies have selectively labeled the central projections of chemosensitive libers caudally to the obex within the NTS in cats and rats, whereas barosensory libers project rostral to the obex (57-59). The NTS, which contains the premotor neurons of the dorsal respiratory group (60), is now recognized as the major projection site of chemosensory libers. Neurons of caudal NTS with carotid chemoreceptor inputs project onto the ventrolateral medulla (61) that contains the premotor neurons of the ventral respiratory group (60). 

Takeda M, Matsumoto S. Discharge patterns of dorsal and ventral respiratory group neurons during spontaneous augmented breaths observed in pentobarbital anesthetized rats. Brain Res 1997 749 95-100. 

Cl adrenaline cells Cl C2 adrenaline cells C2 C3 adrenaline cells C3 caudal interstitial nucleus of the medial longitudinal fasciculus Cl caudal linear nucleus of the raphe CLi caudal periolivary nucleus CPO caudate putamen (striatum) CPu caudoventral respiratory group CVRG caudoventrolateral reticular nucleus CVL cell bridges of the ventral striatum CB central amygdaloid nucleus, capsular part CeC... 

The respiratory centers arc neuronal groups found primarily in the medulla and pons of the brain stem. The medullary respiratory center comprises a dorsal and ventral group, located in the reticular formation of the medulla below the fourth ventricle. They are believed to be central targets for OP toxicity through an unknown mechanism. Damage to these neuronal control centers will affect inspiration and expiration. 

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