Denisov S D
Arkh Anat Gistol Embriol. 1983 Nov;85(11):60-6.
When studying phylogenetic transformations of the sympathetic trunk, a theoretical possibility has been substantiated that in Mammalia a caudal continuation of the vertebral nerve in the thoracic area can exist. By means of some embryological and anatomical methods, in man and in certain animals (cat, dog), together with the cervical, the thoracic vertebral nerve has been revealed. The latter has an appearance of a plexus situating on the rudimentary thoracic vertebral artery wall and is formed at the expense of the multisegmentary distribution of the gray connective branches fibers. Anatomical manifestation of multisegmentarity of the gray connective branches connections is a division of these branches into cranial and caudal fasciculi and their spreading in the foramens between the transversal processes of the thoracic vertebrae and the necks of the corresponding ribs. In Mammalia the neck and the thoracic vertebral nerves combine into the vertebral neural trunk homologous to the secondary sympathetic trunk in birds. The thoracic vertebral nerve is a roundabout way for innervation of many somatic and vegetative structures. The pathogenetic mechanisms responsible for disturbances in the cervical vertebral nerve function, probably, somehow influence the thoracic vertebral nerve.
在研究交感干的系统发育转变时，已证实一种理论可能性，即在哺乳动物中，胸椎区域的椎神经可能存在尾侧延续。通过一些胚胎学和解剖学方法，在人类和某些动物（猫、狗）中，已发现除颈神经外，还有胸段椎神经。后者表现为位于胸段原始椎动脉壁上的一个神经丛，由灰质连接支纤维的多节段分布形成。灰质连接支连接多节段性的解剖学表现是这些分支分为头侧和尾侧束，并在胸椎横突与相应肋骨颈部之间的椎间孔中延伸。在哺乳动物中，颈神经和胸段椎神经合并形成与鸟类的次级交感干同源的椎神经干。胸段椎神经是许多躯体和植物性结构神经支配的一种迂回途径。负责颈椎神经功能障碍的发病机制可能以某种方式影响胸段椎神经。
