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The nervus terminalis in larval and adult Xenopus laevis
1Department of Anatomy, School of Medicine, University of Göttingen, F.R.G.
Abstract:
Nervus terminalis (nt) projections were studied by HRP injections into one nostril in adult Xenopus and in Xenopus tadpoles. Central nt targets are: medial septum, preoptic nucleus, nucleus of the anterior commissure, and hypothalamus (mainly ipsilaterally). In Xenopus tadpoles, additional fibers reach the ipsilateral dorsal thalamus and the mesencephalic tegmentum, bilaterally; furthermore, hypothalamic projections are bilateral. Xenopus tadpole nt connections resemble those of adult urodeles more closely than the projections of frogs. However, Xenopus tadpoles lack nt innervation of the medial septum.
