Dorsal motoric nucleus of the vagus nerve

The central adrenergic system. It is only recently that immunohistochemical methods have been developed to show that adrenaline-containing cells occur in the brain. Some of these cells are located in the lateral tegmental area, while others are found in the dorsal medulla. Axons from these cells innervate the hypothalamus, the locus coeruleus and the dorsal motor nucleus of the vagus nerve. While the precise function of adrenergic system within the brain is uncertain, it may be surmized that adrenaline could play a role in endocrine regulation and in the central control of blood pressure. There is evidence that the concentration of this amine in cerebrospinal fluid... 

Abbreviations Al = primary auditory area ac = anterior commissure Acc = accumbens nucleus AON = anterior olfactory nucleus BF = barrel field BLA = basolateral nucleus of the amygdala CAl = cornu ammonis 1 CA3 = cornu ammonis 3 cc = corpus callosum Cg = cingulate area CPu = caudate-putamen DCb = deep cerebellar nuclei DCo = dorsal cochlear nucleus DG = dentate gyrus DMV = dorsal motor nucleus of the vagus nerve ECu = external cuneate nucleus EP = external plexiform layer ER = entorhinal cortex f = fornix Fa = facial nucleus fa = facial nerve fr = fasciculus retroflexus G1 = glomerular layer GPe = (external segment of the)... 

Fig. 201. HRP- and cholineacetyl transferase (ChAT)-labelled neurons in the vestibular complex of rabbit following an HRP injection into the left ventral paraflocculus and immunocytochemistry with an antibody against ChAT. (A) The black and stippled areas correspond to dense and less dense HRP concentrations. The solid arrows delinate borders between the flocculus, ventral and dorsal paraflocculus. (B) 1-5 are rostral-caudal brainstem sections through the left vestibular complex spaced approximately 400 fim apart. The filled circles correspond to HRP- and ChAT-labelled neurons. The open circles correspond to ChAT-labelled neurons only. The filled diamonds correspond to HRP-labelled neurons only. MVN and DVN, medial and descending vestibular nucleus NPH, nucleus prepositus hypoglossi X, nucleus X ICP, inferior cerebellar peduncle N V and tr V, trigeminal nucleus and tract ION, inferior olivary nucleus N VII, facial nucleus VII, facial nerve DMN X, dorsal motor nucleus of the vagus CE, external cuneate nucleus CN, cochlear nucleus Pyr, pyramidal tract FI, flocculus dPf, dorsal paraflocculus vPf, ventral paraflocculus. Barmack et al. (1992b).

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