Adogwa A O, Lakshminarasimhan A
J Hirnforsch. 1982;23(6):627-33.
The red nucleus of the camel was delineated and reconstructed. For this purpose, three camel brain stems were used for making serial sections in the transverse, sagittal and horizontal planes after double embedding in celloidin-paraffin. All sections were mounted. Nissl and nissl-myelin methods were used for staining. The red nucleus was reconstructed by using a Leitz drawing device; it was seen to have the shape and form of an egg with a flattened medial surface. The red nucleus measures 8.35 mm (length) X 5.00 mm (width) X 3.70 mm (height) and extends from just caudal to the oculomotor nerve fibres to the fasciculus retroflexus rostrally. Five cell types were seen namely, giant, large, medium, small and minimus. The red nucleus shows a larger rostral parvocellular and a smaller caudal magnocellular divisions. The parvocellular division shows three subdivisions namely, the pars veniralis, pars dorsomedialis and cornu lateralis. The red nucleus and its giant cells are the largest reported in literature so far; the giant cells are quite similar to the large ventral spinal motor neurons. The camel cerebellum is very big and this fact along with the greatly developed red nucleus and rubrospinal tract may account for the great muscular control and coordination necessary for the camel to survive in the peculiar desert environment, it is exposed to.
对骆驼的红核进行了描绘和重建。为此,使用了三个骆驼脑干,在火棉胶-石蜡双重包埋后,制作横切面、矢状面和水平面的连续切片。所有切片均已裱贴。采用尼氏染色法和尼氏-髓鞘染色法进行染色。使用徕卡绘图仪重建红核;可见其形状呈内侧扁平的卵形。红核的尺寸为8.35毫米(长)×5.00毫米(宽)×3.70毫米(高),从动眼神经纤维尾侧一直延伸到吻侧的后屈束。可见五种细胞类型,即巨型、大型、中型、小型和极小细胞。红核呈现出较大的吻侧小细胞部和较小的尾侧大细胞部。小细胞部有三个亚部,即腹侧部、背内侧部和外侧角。红核及其巨型细胞是迄今为止文献报道中最大的;巨型细胞与大型腹侧脊髓运动神经元非常相似。骆驼的小脑非常大,这一事实以及高度发达的红核和红核脊髓束可能解释了骆驼在其所处的特殊沙漠环境中生存所需的强大肌肉控制和协调能力。