THE PROJECTION FROM EDINGER-WESTPHAL NUCLEUS TO THE SPINAL CORD IN THE RABBIT——HRP METHOD
- VernacularTitle:家兔Edinger—Westphal核至脊髓的投射——HRP法研究
- Author:
Siyun SHU
- Publication Type:Journal Article
- Keywords:
Edinger—Westphal nucleus;
Spinal cord;
HRP method;
Rabbit
- From:
Acta Anatomica Sinica
1954;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
The projection from Edinger-Westphal (E—W) nucleus to the spinal cord was studied in fifteen rabbits by injecting HRP or WGA—HRP into the cervical, thoracic and lumbar segments of the spinal cord. The normal cytoarchitecture of E—W nucleus was also studied with normal Nissl stained sections.The E—W nucleus of the rabbit is a midline unpaired structure except for the most rostral part which is paired. The shape of the whole nucleus looks like a band with its long axis lying rostrocaudally. It is mainly consisted of medium and small fusiform neurons with their long axis lying dorsoventrally. Neurons of the rostral part of the E—W nucleus, which is called the anterior median nucleus in this paper, are longer and darker than those of the caudal part of the E—W nucleus, or the proper E—W nucleus.Many labelled cells were found in AM and E—W nuclei in all the injected cases. The neurons, projecting to the cervical, thoracic and lumbar segments, were distributed diffusely in E—W nucleus without evident somatotopic organization. In the lumbar injected cases, there were a few labelled cells in the rostral end of AM nucleus where the nucleus was divided into two parts bilaterally.
