仔猪疑后核和疑核及面后核的形态与构筑

用仔猪脑干制成低粘度硝化棉连续切片,以Nissl法染色,光镜观察。结果表明:①疑后核居延髓尾侧部相当于脊髓中间外侧柱的位置。核往呈锥形,锥底朝前接疑核。细胞疏密不匀,小细胞多在后部,中等细胞多在前部,大细胞散布于中、小细胞之中。②疑核前部轮廓不清,主要由中、小细胞组成。后部的背内侧部主要由大细胞组成;腹外侧部主要由聚集成团的小细胞组成。③面后核在面神经核后方,由中等细胞组成背、腹二密集的细胞群。

THE MORPHOLOGY AND CYTOARCHITECTURE OF THE NUCLEI RETROAMBIGUALIS, AMBIGUUS AND RETROFACIALIS IN THE PIGLETS MEDULLA OBLONGATA

The serial sections of the piglets brainstem were stained by Nissl staining method to study the morphology and cytoarchitecture of the following euclei. The results show that:1) N. retroambigualis is located in the caudal part of the medulla oblongata. Its location corresponds to the intermediolateral column of the spinal cord. It is of pyramidal shape with the base connecting with the caudal end of the N. ambiguus. 2) N. ambiguus is composed of two parts: The rostral part is composed of medium-sized and small-sized cells. The caudal part is subdivided into a dorsomedial and a ventrolateral cell groups 3) N.retrofacialis is corrposed of a dorsal and a ventral cell groups, and the both groups are composed of densely packed medium sized cells.