Khor'kov A D
Arkh Anat Gistol Embriol. 1978 Jan;74(1):69-76.
The fine structure of nerve plexus in the rabbit abdominal aorta, ear and coronary arteries has been studied. Four types of the nerve fibre organization corresponding to different levels of sectioning their preterminal and terminal zones have been determined. Axons form large bundles which lose Schwann sheathes and divide into smaller and even single axons as they approach the distal end. Single axons make up contacts with effector cells without forming special synaptic structures. The smalles distance found between axon membranes and smooth muscle cells is 20 nm and 50 nm for the ear and coronary arteries, respectively. In the abdominal aorta, axons lie at a distance of several microns from the muscle sheath. Such arrangement supports the hypothesis of a "distant" nervous influence on the smooth muscle and indicates that the space of nervous influence comprises the tissue surrounding the blood vessel
对兔腹主动脉、耳部动脉和冠状动脉中神经丛的精细结构进行了研究。已确定了四种神经纤维组织类型，它们对应于其终末前区和终末区不同的切片水平。轴突形成大束，在接近远端时失去施万鞘并分成较小的甚至单个轴突。单个轴突与效应细胞形成接触，不形成特殊的突触结构。轴突膜与耳部动脉和冠状动脉平滑肌细胞之间的最小距离分别为20纳米和50纳米。在腹主动脉中，轴突与肌鞘相距数微米。这种排列支持了对平滑肌存在“远距离”神经影响的假说，并表明神经影响的空间包括血管周围的组织。
