THE INDIRECT PATHWAY OF THE SOMATIC AFFERENT ELEMENTS FROM TRIGEMINAL NERVE TO NUCLEUS TRACTUS SOLITARII——A LIGHT AND ELECTRON MICROSCOPIC HRP TRANSGANGLIONIC AND RETROGRADE TRACING STUDY / 解剖学报
Acta Anatomica Sinica
; (6)1955.
Article
em Zh
| WPRIM
| ID: wpr-569146
Biblioteca responsável:
WPRO
ABSTRACT
The indirect pathway of the somatic afferent elements from trigeminal nerve (TGN) to nucleus tractus solitarii (NTS) was studied with the light and electron microscopic HRP transganglionic and retrograde tracing. After HRP was injected into NTS at the level of obex, the retrogradely labeled cells were mainly found in the interstitial nucleus buried in the spinal tract of TGN along caudal subnucleus. The interstitial nucleus was also the terminating area of the primary afferent fibers of lingual and inferior orbital nerves. Under electron microscope, it was found that the primary afferent terminals of lingual and inferior orbital nerves formed synapses on the dendrites of neurons in the interstitial nucleus. Moreover, in cellular architecture, the interstitial nucleus and the superficial laminae of the caudal nucleus of TGN were similar and continuous with each other. Hence, the pathway from the TGN to NTS via the interstitial nucleus is consisted of two neurons and the sensations transmitted through this pathway may be considered to be somatic. It is presumed that this pathway composed of two neurons might modulate the visceral afferent function in NTS when certain points in the skin area innervated by TGN were acupunctured.
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Base de dados:
WPRIM
Idioma:
Zh
Revista:
Acta Anatomica Sinica
Ano de publicação:
1955
Tipo de documento:
Article