Ezeasor D N, Singh A
Department of Veterinary Anatomy, University of Nigeria, Nsukka.
Acta Anat (Basel). 1988;133(1):16-23. doi: 10.1159/000146607.
Caprine hemal nodes were studied by light microscopy after glutaraldehyde fixation and epoxy resin embedding. A node consisted of a capsule, subcapsular and other sinuses, cortex, medulla and hilus. Elements of circulating blood filled the interstices of the reticular meshwork and associated macrophages which traversed the lumina of subcapsular and medullary sinuses. The latter were rare in 1-month-old goats, progressively increased in number and size in 2- to 4-month-old goats and coalesced with each other and the subcapsular sinus in adult animals. The cortical tissue appeared as lymphoid nodules. Circumferential lymphatic vessels abutted on outer margins of the nodules and gave origin to several radial lymphatics which branched and anastomosed between the medullary blood sinuses. Medullary cords were organized around the radial lymphatics. A single efferent lymphatic was formed at the hilum by confluence of the radial lymphatics. Our study, in contrast to earlier reports, shows that caprine hemal nodes possess efferent lymphatics. The present data suggest that the hemal nodes are involved, in addition to classical functions, in blood storage by hemoconcentration.
对戊二醛固定和环氧树脂包埋后的山羊血淋巴结进行了光学显微镜研究。一个淋巴结由被膜、被膜下窦和其他窦、皮质、髓质和门部组成。循环血液的成分充满了网状网络的间隙以及穿过被膜下窦和髓窦腔的相关巨噬细胞。后者在1月龄山羊中很少见，在2至4月龄山羊中数量和大小逐渐增加，并在成年动物中相互融合并与被膜下窦融合。皮质组织表现为淋巴小结。周向淋巴管邻接小结的外缘，并发出几条放射状淋巴管，这些淋巴管在髓血窦之间分支并吻合。髓索围绕放射状淋巴管排列。放射状淋巴管在门部汇合形成一条单一的输出淋巴管。与早期报告相反，我们的研究表明山羊血淋巴结具有输出淋巴管。目前的数据表明，除了经典功能外，血淋巴结还通过血液浓缩参与血液储存。
